Such occasional use carries the danger of abusing programming techniques suitable for mainstream languages such as Java, C and Python, but that can lead to disastrous results when applied to XSLT.
However, you can avoid the problems of occasional use by studying a few applications of different well-known programming problems to an XSLT programming task through this set of simple, thoroughly explained exercises.
An XSLT processor takes an XML document as input, processes it, and outputs the content in (usually) some altered form, such as XML, HTML, or text. Here’s a simple XML document that serves as the basis for the input examples in this article:
The document describes several books in a bookstore, providing the ISBN number, a language code, author, and title for each book.
The example above is somewhat incomplete as it does not give exactly the same output as the one defined in the problem definition. Indeed, once you launch it, the result is one long line resembling this:
Now, suppose you make the input file a bit more complex, introducing sections and rows to locate books more easily in the bookstore:
If you try to continue in the flow-driven way, the XSLT must grow considerably (and as you’ll see, needlessly) to adapt to the format change, adding templates to iterate over and process the
and |
elements:
Event-driven XSLT
Fortunately, you can make the transformation much simpler by using matched templates. A matched template is one the XSLT processor triggers when its “match” attribute matches the current (context) node, whether that’s simply the name of a tag or a more complex XPath expression. For example, the processor will trigger the following template whenever the context node is a “lang” attribute (the ampersand denotes an attribute node rather than an element node).
This element has the follwing language id:
By processing the file through matched templates, the code makes as few assumptions as possible about the format of the input file. For example, the following stylesheet outputs exactly the same result for both input files, even though their hierarchical formats differ significantly. Here’s the revised stylesheet:
This event-driven version matches the root element?regardless of its name?by using the single backslash (/) syntax. Next, it outputs the root tag, and instructs the stylesheet to continue the iteration over the contents of the current or context node (the root node in this case) with the apply-templates call.
If you apply this stylesheet to the second input file, you’ll get the following result:
JavaScript: The Definitive Guide JavaScript: The Definitive Guide Photoshop 6 for Professionals
The output is indeed the same as for the first input file, except for one minor annoyance. There are some gratuitous carriage returns before and after the </span> tags that cause the extra white space in the output.</p>
<p>After trying to determine the cause of these extra carriage returns, an occasional XSLT programmer might just drop the simple event-driven approach altogether in favor of the more complex flow-driven one. But if you instead explore the <a href='http://www.w3.org/TR/xslt' target='_blank'>XSLT specification</a>, you’ll find a <a href="JavaScript:showSupportItem('sidebar1');">built-in template</a> that copies text through and thus outputs the carriage returns:</p>
<pre><code> <xsl:template match="text()"> <xsl:value-of select="."/> </xsl:template></code></pre>
<p>In the example above, the carriage returns stem from the inside of the <span class="pf"></p>
<section></span>, <span class="pf"><row></span>, and <span class="pf"><book></span> tags of the input document, one for each tag.</p>
<p>To correct that, you can add one line to the event-driven stylesheet that matches <span class="pf">text()</span> nodes as follows:</p>
<pre><code> <xsl:template match="text()"/> </code></pre>
<p>That line gets rid of the carriage returns by overriding the built-in text template using a custom version that produces no output.</p>
<p>The key point to take away here is that almost any useful XSLT stylesheet should override at least two of the <a href="JavaScript:showSupportItem('sidebar1');">built-in templates</a>: the one for text, shown above, and the one that matches all nodes, which is:</p>
<pre><code> <xsl:template match="*|/"> <xsl:apply-templates/> </xsl:template></code></pre>
<p>The built-in template for nodes copies nothing to the output, but by invoking the <span class="pf"><xsl:apply-templates/></span> call, allows other templates to match children of the current tag. In other words, any XSLT stylesheet processes all the nodes in the input document <em>by default</em>.</p>
<table align="center" width="95%" border="1" cellpadding="3" style="color: red; background: white">
<tr>
<td>Author’s Note: You can gain fine-grained control over extra whitespace characters in the XSLT output by using the <span class="pf"><xsl:preserve-space></span> and <span class="pf"><xsl:strip-space></span> constructs in the stylesheet, or by using the <span class="pf">xml:space</span> attribute on XML tags in the input files.</td>
</tr>
</table>
<p><strong>Imperative XSLT</strong><br />Unlike most programming languages, XSLT does not favor sequential execution. This is manifested by the verbosity of the related language constructs such as <span class="pf">switch</span> and <span class="pf">for-each</span>, and by weak support of side-effects (no variables in the traditional sense)</p>
<p>This common example illustrates the verbosity of the imperative approach, which constructs an HTML table, placing the book names in rows and alternating colors on odd and even rows from the input document:</p>
<pre><code> <?xml version="1.0" encoding="utf-8"?> <table> <tr> <td style="color:red;">David Flannagan</td> </tr> <tr> <td style="color:blue;">David Flannagan</td> </tr> <tr> <td style="color:red;">Dan Margulis</td> </tr> </table> </code></pre>
<table border="0" cellspacing="0" cellpadding="5" align="right" width="175">
<tr>
<td valign="top"><a href="JavaScript:showSupportItem('figure1');"><img decoding="async" loading="lazy" border="0" alt="" src="/assets/articlefigs/13354.jpg" width="175" height="53"></a></td>
<td width="12"> </td>
</tr>
<tr>
<td class="smallfont"><a href="JavaScript:showSupportItem('figure1');">Figure 1</a>. Table with Alternating Colors: The figure shows how alternating red and blue rows of content might render in a browser.</td>
</tr>
</table>
<p><a href="JavaScript:showSupportItem('figure1');">Figure 1</a> shows how a browser would render the preceding code.</p>
<p>Here’s how you can accomplish the task in the imperative style:</p>
<pre><code> <?xml version="1.0" ?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output indent="yes" encoding="utf-8"/> <xsl:strip-space elements="*"/> <xsl:template match="row"> <table> <xsl:for-each select="book[1]"> <xsl:call-template name="process-book"> <xsl:with-param name="even" select="false()"/> </xsl:call-template> </xsl:for-each> </table> </xsl:template> <xsl:template name="process-book"> <xsl:param name="even"/> <xsl:choose> <xsl:when test="$even"> <tr><td style="color:blue;" > <xsl:value-of select="author"/></td></tr> </xsl:when> <xsl:otherwise> <tr><td style="color:red;" > <xsl:value-of select="author"/></td></tr> </xsl:otherwise> </xsl:choose> <xsl:for-each select="following-sibling::book[1]"> <xsl:call-template name="process-book"> <xsl:with-param name="even" select="not($even)"/> </xsl:call-template> </xsl:for-each> </xsl:template> <xsl:template match="text()"/> </xsl:stylesheet></code></pre>
<p>The stylesheet creates one table for each <span class="pf"><row></span> element in the input, so it first matches the row tag. Then, it uses the <span class="pf">for-each</span> construct to change the execution context to the first book node, calling the <span class="pf">process-book</span> template for each with a parameter that controls the row color in the HTML table. The <span class="pf">process-book</span> template then outputs the row, with either a red or a blue color depending on the value of the parameter, and calls itself to process the next book element with the opposite parameter value.</p>
<p>As you can see, this processing method gets complex very quickly, and you’d need to alter it for every format alteration in the input XML file.</p>
<p><strong>Declarative XSLT</strong><br />For XSLT, declarative is the opposite of the common imperative or algorithmic strategy; that is, an XSLT programmer does <em>not define a sequence of actions</em> that form an algorithm but rather sets a number of rules that the result should satisfy.</p>
<p>The declarative nature of the language lets you place templates anywhere and in any order in the XSLT document, because order has no impact on the resulting document.</p>
<table align="center" width="95%" border="1" cellpadding="3" style="color: red; background: white">
<tr>
<td>Author’s Note: The preceding rule applies except in cases of conflict resolution where order is the last decision criteria. </td>
</tr>
</table>
<p>Here is a stylesheet written with the declarative approach that provides the same output:</p>
<pre><code> <?xml version="1.0" ?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output indent="yes" encoding="utf-8"/> <xsl:strip-space elements="*"/> <xsl:template match="/"> <table> <xsl:apply-templates select="@*|node()"/> </table> </xsl:template> <xsl:template match="book[(position() mod 2)=0]"> <tr><td style="color:red;"> <xsl:value-of select="author"/></td></tr> </xsl:template> <xsl:template match="book[(position() mod 2)=1]"> <tr><td style="color:blue;" > <xsl:value-of select="author"/></td></tr> </xsl:template> <xsl:template match="text()"/> </xsl:stylesheet></code></pre>
<p>In contrast to the procedural approach, this version doesn’t define any algorithm. Instead, it specifies two templates for the processor to match: one for even-numbered rows and one for odd-numbered rows. The processor outputs the contents in red for even-numbered elements and in blue for odd-numbered elements.</p>
<p><strong>Key Indexing in XSLT</strong><br />You can simplify a fair portion of XSLT processing if you understand how to use keys. Keys in XSLT have more or less the same meaning that indexes have in relational databases, except that in XSLT, keys index hierarchical structure rather than relational structure. It’s easiest to explain keys with an example.</p>
<p>Imagine that you need to count the number of book copies available for each book title and display them in an HTML table, where each row looks like this:</p>
<pre><code> ... <tr> <td>JavaScript: The Definitive Guide</td> <td>2</td> </tr> ...</code></pre>
<p>Here’s a possible solution that illustrates the use of keys:</p>
<pre><code> <?xml version="1.0" ?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output indent="yes" encoding="utf-8"/> <xsl:key name="kbook" match="book" use="title"/> <xsl:template match="/"> <table> <xsl:apply-templates select="node()|@*"/> </table> </xsl:template> <xsl:template match="book"> <tr> <td> <xsl:value-of select="title"/> </td><td> <xsl:value-of select="count(key('kbook',title))"/> </td> </tr> </xsl:template> <xsl:template match="text()"/> </xsl:stylesheet></code></pre>
<p>In the preceding example, the key declaration has three parts: the <span class="pf">name</span> of the key, used to refer to it later in the code, the <span class="pf">match</span>, that is, the element or attribute of the input data to be indexed, and the <span class="pf">use</span> which is an XPath expression that defines the key itself. XPath is a language for addressing parts of an XML document, designed to be used by XSLT and XPointer. See the full <a href='http://www.w3.org/TR/xpath' target='_blank'>language specification</a> for more information.</p>
<p>In this particular case, the expression <span class="pf"><xsl:key name="kbook" match="book" use="title"/></span> literally means: <em>Create a key with the name kbook on all the tags book and group them by title. </em></p>
<p>The “book” template uses the key by calling the function <span class="pf">key()</span> with two parameters: the name of the key and the value of the index as defined in the <span class="pf">@use</span> attribute of the key declaration?in this case, simply “title” as that’s the child of the context <span class="pf"><book></span> node. Quite expectedly, this stylesheet would produce two identical lines for the book “JavaScript: The Definitive Guide” as shown below.</p>
<pre><code> <?xml version="1.0" encoding="utf-8"?> <table> <tr> <td>JavaScript: The Definitive Guide</td> <td>2</td> </tr> <tr> <td>JavaScript: The Definitive Guide</td> <td>2</td> </tr> <tr> <td>Photoshop 6 for Professionals</td> <td>1</td> </tr> </table></code></pre>
<p>That leads to another common XSLT problem: removing duplicates.</p>
<p><strong>Removing Duplicates: the Muenchian Method</strong><br />Because XSLT is an almost side-effect-free declarative language, the problem of removing duplicates?ridiculously simple in imperative languages such as C++ or Java?becomes overly complicated. But fortunately, an elegant solution exists, so unexpected that it even earned its own name, “Muenchian,” because Steve Muench was reportedly the first to discover it.</p>
<pre><code> <?xml version="1.0" ?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output indent="yes" encoding="utf-8"/> <xsl:key name="kbook" match="book" use="title"/> <xsl:template match="/"> <table> <xsl:apply-templates select="node()|@*"/> </table> </xsl:template> <xsl:template match="book"> <xsl:if test="generate-id()= generate-id(key('kbook',title)[1])"> <tr> <td> <xsl:value-of select="title"/> </td><td> <xsl:value-of select="count(key('kbook',title))"/> </td> </tr> </xsl:if> </xsl:template> <xsl:template match="text()"/> </xsl:stylesheet></code></pre>
<p>Notice that the key declaration in this example is identical to the previous example. You use the <span class="pf">generate-id()</span> function to obtain a unique id for each node, which ensures that every time you pass in the same <span class="pf"><book></span> node, you get the same ID. The ID value depends on which XSLT processor implementation you’re using, but typically, ID would be something like <span class="pf">n1n1</span> or <span class="pf">d1md1</span> or some other meaningless string. This example uses the key in a conditional expression that compares the ID of the current node with the ID of the <em>first</em> node returned by the key that matches the title of the current node. In other words, the key that matches “JavaScript: The Definitive Guide” returns two nodes ordered as 1 and 2. During execution, the template matching <span class="pf"><book></span> passes in those same two nodes. When processing node 1, the ID of the node is the same as returned by the key <span class="pf">key(‘kbook’,’JavaScript: The Definitive Guide’)[1]</span>; but when processing node 2, the condition is <span class="pf">false</span>. Thus, the stylesheet processes only one book that matches the title “JavaScript: The Definitive Guide.”</p>
<p><strong>Using Complex Keys in XSLT</strong><br />Because the <span class="pf">use</span> attribute of the key definition is an XPath expression, it’s possible to create quite elaborate indexes that rely upon complex XPath statements. As an example, <span class="pf">generate-id()</span> makes a unique key for every <span class="pf"><book></span> node.</p>
<pre><code> <xsl:key name="kbook" match="book" use="generate-id()"/> </code></pre>
<p>The International Standard Book Number, or ISBN (sometimes pronounced “is-ben”), is a unique identifier for books, intended to be used commercially. The following declaration calculates the checksum of an ISBN number by returning <span class="pf">true</span> if the checksum passes the test and <span class="pf">false</span> otherwise.</p>
<p>You can find the check digit of an ISBN by first multiplying each digit of the ISBN by that digit’s place in the number sequence, with the leftmost digit being multiplied by 1, the next digit by 2, and so on. Next, take the sum of these multiplications and calculate the sum modulo 11, with “10” represented by the character “X”. As an example, for the ISBN 1-56592-235-2, the calculation would be <span class="pf">(1*1 + 2*5 + 3*6 + 4*5 + 5*9 + 6*2 + 7*2 + 8*3 + 9*5) mod 11</span>. The <a href='http://www.w3.org/TR/xpath#function-translate' target='_blank'>translate</a> function deletes all the dash (-) characters from the <span class="pf">@isbn</span> attribute value. The following example uses the <span class="pf"><a href='http://www.w3.org/TR/xpath#function-substring' target='_blank'>substring</a></span> function to extract each character from the string returned by translate.</p>
<pre><code> <xsl:key name="kbook" match="book" use="boolean( (substring(translate(@isbn, '-',''), 1,1) * 1 + substring(translate(@isbn, '-',''), 2,1) * 2 + substring(translate(@isbn, '-',''), 3,1) * 3 + substring(translate(@isbn, '-',''), 4,1) * 4 + substring(translate(@isbn, '-',''), 5,1) * 5 + substring(translate(@isbn, '-',''), 6,1) * 6 + substring(translate(@isbn, '-',''), 7,1) * 7 + substring(translate(@isbn, '-',''), 8,1) * 8 + substring(translate(@isbn, '-',''), 9,1) * 9) mod 11 - substring(translate(@isbn, '-',''),10,1)) or (boolean( (substring(translate(@isbn, '-',''), 1,1) * 1 + substring(translate(@isbn, '-',''), 2,1) * 2 + substring(translate(@isbn, '-',''), 3,1) * 3 + substring(translate(@isbn, '-',''), 4,1) * 4 + substring(translate(@isbn, '-',''), 5,1) * 5 + substring(translate(@isbn, '-',''), 6,1) * 6 + substring(translate(@isbn, '-',''), 7,1) * 7 + substring(translate(@isbn, '-',''), 8,1) * 8 + substring(translate(@isbn, '-',''), 9,1) * 9) mod 11 = 10) and (substring(translate(@isbn, '-',''),10,1)) = 'X')"/></code></pre>
<p><strong>Branching vs. Modes in XSLT</strong><br />XSLT’s branching powers are weak compared to the branching statements of conventional languages. Instead, you can use the powerful mechanism of modes?often unexplored by occasional XSLT programmers.</p>
<p>Suppose you have to print all the titles and their respective ISBN codes, checking for the ISBN code validity at the same time. You could represent the desired result as follows:</p>
<pre><code> <?xml version="1.0" encoding="utf-8"?> <table> <th>ISBN number check failed</th> <tr> <td class="color:red;">1-56592-235-1</td> </tr> </table><table> <th>ISBN number check passed</th> <tr> <td>1-56592-235-2</td> </tr> <tr> <td>0-471-40399-7</td> </tr> </table></code></pre>
<p>Without knowing how to use keys and modes, you might implement the solution with the following stylesheet logic:</p>
<pre><code> <xsl:choose> <xsl:when test=""> </xsl:when> <xsl:otherwise> </xsl:otherwise> </xsl:choose></code></pre>
<p>This example would construct the table by iterating on the ISBN nodes and choosing whether to output <span class="pf">class=”color:red;”</span> on each pass. This would be easy if you weren’t obliged to group the result and output all the failed ISBN codes first. For the purpose of grouping, the use of keys and modes leads to much simpler code, the alternatives being extension functions or chaining of two different XSLT stylesheets.</p>
<pre><code> <?xml version="1.0" ?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> <xsl:output indent="yes" encoding="utf-8"/> <xsl:key name="kbook" match="book" use="boolean( (substring(translate(@isbn, '-',''), 1,1) * 1 + substring(translate(@isbn, '-',''), 2,1) * 2 + substring(translate(@isbn, '-',''), 3,1) * 3 + substring(translate(@isbn, '-',''), 4,1) * 4 + substring(translate(@isbn, '-',''), 5,1) * 5 + substring(translate(@isbn, '-',''), 6,1) * 6 + substring(translate(@isbn, '-',''), 7,1) * 7 + substring(translate(@isbn, '-',''), 8,1) * 8 + substring(translate(@isbn, '-',''), 9,1) * 9) mod 11 - substring(translate(@isbn, '-',''),10,1)) or (boolean( (substring(translate(@isbn, '-',''), 1,1) * 1 + substring(translate(@isbn, '-',''), 2,1) * 2 + substring(translate(@isbn, '-',''), 3,1) * 3 + substring(translate(@isbn, '-',''), 4,1) * 4 + substring(translate(@isbn, '-',''), 5,1) * 5 + substring(translate(@isbn, '-',''), 6,1) * 6 + substring(translate(@isbn, '-',''), 7,1) * 7 + substring(translate(@isbn, '-',''), 8,1) * 8 + substring(translate(@isbn, '-',''), 9,1) * 9) mod 11 = 10) and (substring(translate(@isbn, '-',''),10,1)) = 'X')"/> <xsl:template match="/"> <table> <th>ISBN number check failed</th> <xsl:apply-templates select="key('kbook',true())" mode="failed"/> </table> <table> <th>ISBN number check passed</th> <xsl:apply-templates select="key('kbook',false())" mode="passed"/> </table> </xsl:template> <xsl:template match="book" mode="failed"> <tr> <td class="color:red;"> <xsl:value-of select="@isbn"/> </td> </tr> </xsl:template> <xsl:template match="book" mode="passed"> <tr> <td> <xsl:value-of select="@isbn"/> </td> </tr> </xsl:template> <xsl:template match="text()"/> </xsl:stylesheet></code></pre>
<p>This version processes both types of <span class="pf">book</span> nodes?those that did not pass checksum verification for their ISBN codes, and those that did?using separate templates for the <span class="pf">failed</span> and <span class="pf">passed</span> modes. The stylesheet outputs ISBN values in red for books with ISBN codes that fail the checksum test.</p>
<p><strong>Extending XSLT</strong><br />Sometimes XSLT turns to be too lexically poor to do complex transformations. Two viable options then exist:</p>
<ul>
<li>Chain the execution of XSLTs instead of trying to do everything in one pass.</li>
<li>Use common extension functions from the <a href="http://www.exslt.org" target="_blank">EXSLT package</a>.</li>
</ul>
<p><strong>Chaining XSLT Execution</strong><br />Contrary to what one might think, chaining XSLT stylesheets?using the output of one stylesheet transformation as the input for the next stylesheet in the chain?does not add much overhead if done in a proper way. Although nearly all XSLT processors reconstruct the structure of the input document in memory for each pass, that process is not equivalent to the reconstruction of a DOM tree. Most XSLT processors use an internal format that may be a lot faster. In fact, a number of small XSLT stylesheets chained together can actually boost performance as compared to a single complex stylesheet.</p>
<p><strong>Using Common Extension Functions</strong><br />There is an effort to provide a more or less common set of extensions to XSLT with the corresponding reference implementations. Some of these functions already exist in various XSLT processors under different names.</p>
<p>The most notable function is node-set. It allows the conversion of <em>result tree fragments</em> into <em>node-sets</em>. If you create a variable with a <span class="pf">select</span> statement, it returns a node-set:</p>
<pre><code> <xsl:variable name="foo" select="/"/></code></pre>
<p>In contrast, if you create a variable with an embedded statement, it returns a result tree fragment:</p>
<pre><code> <xsl:variable name="foo"> <xsl:copy-of select="/"> </xsl:variable></code></pre>
<p>Because XSLT allows more operations on node-sets, it is wise to use the <span class="pf">select</span> statement when possible instead of embedded statements. Otherwise, the node-set extension function would come to the rescue.</p>
<p>The node-set extension function exists for several processors: <a href='http://4suite.org/' target='_blank'>4XSLT</a>, <a href='http://xml.apache.org/xalan-j' target='_blank'>Xalan-J</a>, <a href='http://users.iclway.co.uk/mhkay/saxon/index.html' target='_blank'>Saxon</a>, <a href='http://webservices.xml.com/pub/r/1031' target='_blank'>jd.xslt</a>, and <a href='http://xmlsoft.org/XSLT/' target='_blank'>libxslt</a>, and you make it accessible to your stylesheets by including the namespace <span class="pf">http://exslt.org/common</span>.</p>
<pre><code> <?xml version="1.0"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:ext="http://exslt.org/common" version="1.0"> <xsl:variable name="all"> <xsl:copy-of select="child::*[1]"> </xsl:variable> <xsl:template select="/"> <root> <xsl:copy-of select="ext:node-set($all)"> </root> </xsl:template> </xsl:stylesheet></code></pre>
<p>As a sign of EXSLT’s popularity, even Microsoft supports some of the EXSLT functions. However, Microsoft uses a different namespace: <span class="pf">urn:schemas-microsoft-com:xslt</span>.</p>
<p>Overall, as an occasional XSLT developer, try to keep the advantages of functional and flow-driven programming in mind?and be wary of falling into the trap of trying to use the procedural or imperative programming techniques that you commonly use in standard programming languages.</p>
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<article class="elementor-post elementor-grid-item post-26016 post type-post status-publish format-standard has-post-thumbnail hentry category-data-access-and-management">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/data-access-and-management/what-we-should-expect-from-cell-phone-tech-in-the-near-future/" >
<div class="elementor-post__thumbnail"><img width="1707" height="2560" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-26017 ewww_webp" alt="cell phones" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/pexels-rdne-stock-project-4921398-scaled.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/pexels-rdne-stock-project-4921398-scaled.jpg.webp" data-eio="j" /><noscript><img width="1707" height="2560" src="https://www.devx.com/wp-content/uploads/pexels-rdne-stock-project-4921398-scaled.jpg" class="elementor-animation-grow attachment-full size-full wp-image-26017" alt="cell phones" loading="lazy" /></noscript></div>
</a>
<div class="elementor-post__text">
<h3 class="elementor-post__title">
<a href="https://www.devx.com/data-access-and-management/what-we-should-expect-from-cell-phone-tech-in-the-near-future/" >
What We Should Expect from Cell Phone Tech in the Near Future </a>
</h3>
<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 31, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>The earliest cell phones included boxy designs full of buttons and antennas, and they only made calls. Needless to say, we’ve come a long way from those classic brick phones</p>
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<article class="elementor-post elementor-grid-item post-25678 post type-post status-publish format-standard has-post-thumbnail hentry category-tech-trends category-technology tag-keyboards tag-mechanical-keyboards">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/tech-trends/the-best-mechanical-keyboards-for-programmers-where-to-find-them/" >
<div class="elementor-post__thumbnail"><img width="1920" height="1280" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25998 ewww_webp" alt="Where to find the Best Mechanical Keyboards for Programmers" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/pexels-karol-d-841228.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/pexels-karol-d-841228.jpg.webp" data-eio="j" /><noscript><img width="1920" height="1280" src="https://www.devx.com/wp-content/uploads/pexels-karol-d-841228.jpg" class="elementor-animation-grow attachment-full size-full wp-image-25998" alt="Where to find the Best Mechanical Keyboards for Programmers" loading="lazy" /></noscript></div>
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<h3 class="elementor-post__title">
<a href="https://www.devx.com/tech-trends/the-best-mechanical-keyboards-for-programmers-where-to-find-them/" >
The Best Mechanical Keyboards For Programmers: Where To Find Them </a>
</h3>
<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 29, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>When it comes to programming, a good mechanical keyboard can make all the difference. Naturally, you would want one of the best mechanical keyboards for programmers. But with so many</p>
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<article class="elementor-post elementor-grid-item post-26000 post type-post status-publish format-standard has-post-thumbnail hentry category-devx-daily-news tag-big-brother">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/devx-daily-news/the-digital-panopticon-is-big-brother-always-watching-us-online/" >
<div class="elementor-post__thumbnail"><img width="1920" height="1280" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-26001 ewww_webp" alt="The Digital Panopticon: Is Big Brother Always Watching Us Online?" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/marvin-meyer-SYTO3xs06fU-unsplash-1.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/marvin-meyer-SYTO3xs06fU-unsplash-1.jpg.webp" data-eio="j" /><noscript><img width="1920" height="1280" src="https://www.devx.com/wp-content/uploads/marvin-meyer-SYTO3xs06fU-unsplash-1.jpg" class="elementor-animation-grow attachment-full size-full wp-image-26001" alt="The Digital Panopticon: Is Big Brother Always Watching Us Online?" loading="lazy" /></noscript></div>
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<h3 class="elementor-post__title">
<a href="https://www.devx.com/devx-daily-news/the-digital-panopticon-is-big-brother-always-watching-us-online/" >
The Digital Panopticon: Is Big Brother Always Watching Us Online? </a>
</h3>
<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 26, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>In the age of digital transformation, the internet has become a ubiquitous part of our lives. From socializing, shopping, and learning to more sensitive activities such as banking and healthcare,</p>
</div>
</div>
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<article class="elementor-post elementor-grid-item post-25983 post type-post status-publish format-standard has-post-thumbnail hentry category-artificial-intelligence-ai">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/artificial-intelligence-ai/embracing-change-how-ai-is-revolutionizing-the-developers-role/" >
<div class="elementor-post__thumbnail"><img width="1920" height="1440" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25984 ewww_webp" alt="web developer" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/web-developer.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/web-developer.jpg.webp" data-eio="j" /><noscript><img width="1920" height="1440" src="https://www.devx.com/wp-content/uploads/web-developer.jpg" class="elementor-animation-grow attachment-full size-full wp-image-25984" alt="web developer" loading="lazy" /></noscript></div>
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<h3 class="elementor-post__title">
<a href="https://www.devx.com/artificial-intelligence-ai/embracing-change-how-ai-is-revolutionizing-the-developers-role/" >
Embracing Change: How AI Is Revolutionizing the Developer’s Role </a>
</h3>
<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 25, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>The world of software development is changing drastically with the introduction of Artificial Intelligence and Machine Learning technologies. In the past, software developers were in charge of the entire development</p>
</div>
</div>
</article>
<article class="elementor-post elementor-grid-item post-25978 post type-post status-publish format-standard has-post-thumbnail hentry category-security">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/security/the-benefits-of-using-xdr-solutions/" >
<div class="elementor-post__thumbnail"><img width="512" height="342" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25979 ewww_webp" alt="XDR solutions" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/XDR-solutions.jpeg" data-src-webp="https://www.devx.com/wp-content/uploads/XDR-solutions.jpeg.webp" data-eio="j" /><noscript><img width="512" height="342" src="https://www.devx.com/wp-content/uploads/XDR-solutions.jpeg" class="elementor-animation-grow attachment-full size-full wp-image-25979" alt="XDR solutions" loading="lazy" /></noscript></div>
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<h3 class="elementor-post__title">
<a href="https://www.devx.com/security/the-benefits-of-using-xdr-solutions/" >
The Benefits of Using XDR Solutions </a>
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<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 24, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved</p>
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<article class="elementor-post elementor-grid-item post-25973 post type-post status-publish format-standard has-post-thumbnail hentry category-artificial-intelligence-ai category-security">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/artificial-intelligence-ai/how-ai-is-revolutionizing-fraud-detection/" >
<div class="elementor-post__thumbnail"><img width="512" height="341" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25975 ewww_webp" alt="AI is revolutionizing fraud detection" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/AI-is-revolutionizing-fraud-detection.jpeg" data-src-webp="https://www.devx.com/wp-content/uploads/AI-is-revolutionizing-fraud-detection.jpeg.webp" data-eio="j" /><noscript><img width="512" height="341" src="https://www.devx.com/wp-content/uploads/AI-is-revolutionizing-fraud-detection.jpeg" class="elementor-animation-grow attachment-full size-full wp-image-25975" alt="AI is revolutionizing fraud detection" loading="lazy" /></noscript></div>
</a>
<div class="elementor-post__text">
<h3 class="elementor-post__title">
<a href="https://www.devx.com/artificial-intelligence-ai/how-ai-is-revolutionizing-fraud-detection/" >
How AI is Revolutionizing Fraud Detection </a>
</h3>
<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 23, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across</p>
</div>
</div>
</article>
<article class="elementor-post elementor-grid-item post-25410 post type-post status-publish format-standard has-post-thumbnail hentry category-artificial-intelligence-ai">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/artificial-intelligence-ai/companies-leading-ai-innovation-in-2023/" >
<div class="elementor-post__thumbnail"><img width="1920" height="1440" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25968 ewww_webp" alt="AI innovation" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/AI-innovation.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/AI-innovation.jpg.webp" data-eio="j" /><noscript><img width="1920" height="1440" src="https://www.devx.com/wp-content/uploads/AI-innovation.jpg" class="elementor-animation-grow attachment-full size-full wp-image-25968" alt="AI innovation" loading="lazy" /></noscript></div>
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<div class="elementor-post__text">
<h3 class="elementor-post__title">
<a href="https://www.devx.com/artificial-intelligence-ai/companies-leading-ai-innovation-in-2023/" >
Companies Leading AI Innovation in 2023 </a>
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<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 22, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several</p>
</div>
</div>
</article>
<article class="elementor-post elementor-grid-item post-25406 post type-post status-publish format-standard has-post-thumbnail hentry category-enterprise category-uncategorized category-small-business category-tools">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/small-business/step-by-step-guide-to-properly-copyright-your-website/" >
<div class="elementor-post__thumbnail"><img width="1920" height="1277" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25961 ewww_webp" alt="copyright your website" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/copyright-your-website.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/copyright-your-website.jpg.webp" data-eio="j" /><noscript><img width="1920" height="1277" src="https://www.devx.com/wp-content/uploads/copyright-your-website.jpg" class="elementor-animation-grow attachment-full size-full wp-image-25961" alt="copyright your website" loading="lazy" /></noscript></div>
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<div class="elementor-post__text">
<h3 class="elementor-post__title">
<a href="https://www.devx.com/small-business/step-by-step-guide-to-properly-copyright-your-website/" >
Step-by-Step Guide to Properly Copyright Your Website </a>
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<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 18, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>Creating a website is not easy, but protecting your website is equally important. Implementing copyright laws ensures that the substance of your website remains secure and sheltered. Copyrighting your website</p>
</div>
</div>
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<article class="elementor-post elementor-grid-item post-25417 post type-post status-publish format-standard has-post-thumbnail hentry category-data-access category-software">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/software/fivetran-pricing-explained/" >
<div class="elementor-post__thumbnail"><img width="1920" height="1281" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25942 ewww_webp" alt="data fivetran pricing" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/data-fivetran-pricing.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/data-fivetran-pricing.jpg.webp" data-eio="j" /><noscript><img width="1920" height="1281" src="https://www.devx.com/wp-content/uploads/data-fivetran-pricing.jpg" class="elementor-animation-grow attachment-full size-full wp-image-25942" alt="data fivetran pricing" loading="lazy" /></noscript></div>
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<h3 class="elementor-post__title">
<a href="https://www.devx.com/software/fivetran-pricing-explained/" >
Fivetran Pricing Explained </a>
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<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 17, 2023 </span>
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<div class="elementor-post__excerpt">
<p>One of the biggest trends of the 21st century is the massive surge in analytics. Analytics is the process of utilizing data to drive future decision-making. With so much of</p>
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<article class="elementor-post elementor-grid-item post-25936 post type-post status-publish format-standard has-post-thumbnail hentry category-software">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/software/kubernetes-logging/" >
<div class="elementor-post__thumbnail"><img width="512" height="341" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25938 ewww_webp" alt="kubernetes logging" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/kubernetes-logging.jpeg" data-src-webp="https://www.devx.com/wp-content/uploads/kubernetes-logging.jpeg.webp" data-eio="j" /><noscript><img width="512" height="341" src="https://www.devx.com/wp-content/uploads/kubernetes-logging.jpeg" class="elementor-animation-grow attachment-full size-full wp-image-25938" alt="kubernetes logging" loading="lazy" /></noscript></div>
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<h3 class="elementor-post__title">
<a href="https://www.devx.com/software/kubernetes-logging/" >
Kubernetes Logging: What You Need to Know </a>
</h3>
<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 16, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>Kubernetes from Google is one of the most popular open-source and free container management solutions made to make managing and deploying applications easier. It has a solid architecture that makes</p>
</div>
</div>
</article>
<article class="elementor-post elementor-grid-item post-25930 post type-post status-publish format-standard has-post-thumbnail hentry category-ransomware">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/ransomware/why-is-ransomware-such-a-major-threat/" >
<div class="elementor-post__thumbnail"><img width="1920" height="1280" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25933 ewww_webp" alt="ransomware cyber attack" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/ransomware-cyber-attack.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/ransomware-cyber-attack.jpg.webp" data-eio="j" /><noscript><img width="1920" height="1280" src="https://www.devx.com/wp-content/uploads/ransomware-cyber-attack.jpg" class="elementor-animation-grow attachment-full size-full wp-image-25933" alt="ransomware cyber attack" loading="lazy" /></noscript></div>
</a>
<div class="elementor-post__text">
<h3 class="elementor-post__title">
<a href="https://www.devx.com/ransomware/why-is-ransomware-such-a-major-threat/" >
Why Is Ransomware Such a Major Threat? </a>
</h3>
<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 15, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>One of the most significant cyber threats faced by modern organizations is a ransomware attack. Ransomware attacks have grown in both sophistication and frequency over the past few years, forcing</p>
</div>
</div>
</article>
<article class="elementor-post elementor-grid-item post-25404 post type-post status-publish format-standard has-post-thumbnail hentry category-data-access-and-management">
<a class="elementor-post__thumbnail__link" href="https://www.devx.com/data-access-and-management/tools-you-need-to-make-a-data-dictionary/" >
<div class="elementor-post__thumbnail"><img width="1920" height="1440" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" class="elementor-animation-grow attachment-full size-full wp-image-25923 ewww_webp" alt="data dictionary" loading="lazy" data-src-img="https://www.devx.com/wp-content/uploads/data-dictionary.jpg" data-src-webp="https://www.devx.com/wp-content/uploads/data-dictionary.jpg.webp" data-eio="j" /><noscript><img width="1920" height="1440" src="https://www.devx.com/wp-content/uploads/data-dictionary.jpg" class="elementor-animation-grow attachment-full size-full wp-image-25923" alt="data dictionary" loading="lazy" /></noscript></div>
</a>
<div class="elementor-post__text">
<h3 class="elementor-post__title">
<a href="https://www.devx.com/data-access-and-management/tools-you-need-to-make-a-data-dictionary/" >
Tools You Need to Make a Data Dictionary </a>
</h3>
<div class="elementor-post__meta-data">
<span class="elementor-post-date">
May 12, 2023 </span>
</div>
<div class="elementor-post__excerpt">
<p>Data dictionaries are crucial for organizations of all sizes that deal with large amounts of data. they are centralized repositories of all the data in organizations, including metadata such as</p>
</div>
</div>
</article>
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ML appears in some form in most modern applications?and often needs to be transformed from one form into another: merged, split, massaged, or simply reformatted into HTML. In most cases, it’s far more robust and efficient to use XSLT to perform such transformations than to use common programming languages such as Java, VB.NET, or C#. But because XSLT is an add-on rather than a core language, most developers use XSLT only occasionally, and have neither time nor resources to dive into the peculiarities of XSLT development or to explore the paradigms of functional and flow-driven programming that efficient use of XSLT requires.