Sometimes, sprintf() is unavoidable. For example, when compatibility with C is paramount, Sprintf() has a safer version called snprintf(), which doesn’t write past its buffer’s limits. However, because snprintf() was
ASSERT is a very helpful macro for debugging, because it helps root out false assumptions. However, many programmers make the mistake of putting actual assignments inside the macro. Consider the
If you want to convert from a const to a nonconst or from a volatile to a nonvolatile, you can use const_cast. This is the only conversion allowed with const_cast.
In pre-standard C, I/O operations were based on the Unix APIs. Instead of FILE pointers and functions such as fopen(), fread(), and fclose() that are defined in the header, Unix
The Standard Library doesn’t have a function for rounding floating point variables. However, you can easily round numbers as follows: double d=42.666;int rounded=d+0.5; // rounded = 43d=rounded; // d is
Tool tips are handy for providing explanations for buttons and other fixed components in a panel. Sometimes, it Related Posts BYD Builds Sodium-ion Battery Facility for EVsAnomaly Detection SeriesHyundai Offers
In Web based programming, we usually check querystring parameters in middle tier java objects and do tedious, if not long, checks via if/else, to perform appropriate action or instantiate classes.
The secret lies in the Runtime class. Runtime contains the methodexec, which takes the basic form of: Process exec(String command) orProcess exec(String[] comdarray) orProcess exec(String[] cmdarray, String[] envp, File dir)
A typical HTML page might contain text fields to send data to the server. The data is submitted by clicking the submit button on the Web page. The browser then
If you find the need to put the monitor into rest, you can do so using the following example: Create an standard EXE project Add a CommandButton to Form1 Insert
The following function returns the extension of the filename that is being passed to it. It also takes into account the facts that a filename can include multiple Related Posts
It’s faster to retrieve the length of a string and compare the value to zero than it is to compare it to an empty string. This is especially useful in
There are various problems regarding pointers that can be handled with the help of macros. Some of these problems are: deleting dangling pointers, deleting pointers other than NULL, and checking
Sometimes, you may need to make a Frame or JFrame non resizable. This happens especially when you are using the setBounds method or if you have less components in your
How many times do we add Related Posts Skip Weekends SQL FunctionCareer Advice for Being Successful as a Female DeveloperRelation Between Static Keyword and Memory AllocationGet the UTC Machine Time
Most web sites heavily rely on client-side cookies. For example, ASP Sessions can work correctly only if the browser allows temporary cookies (that are not stored on disk). ASP doesn’t
Few programmers have ever consideredVisual Basic as a real object-oriented programming language, for example becauseof its lack of constructors and inheritance. VB6 code can’t access some Win32 and COM’s features
‘ Add or remove a program to the list of applications that will’ be automatically launched when Windows boots.” Action can be:’ 0 = delete from list’ 1 = execute
‘ get the description of a file from the registry’ or a null string if the file’s extension isn’t registered” NOTE: requires the GetRegistrtValue functionFunction GetFileDescriptionFromReg(ByVal FileName As String) As
Private Declare Sub SHChangeNotify Lib “shell32.dll” (ByVal wEventId As Long, _ ByVal uFlags As Long, ByVal dwItem1 As Long, ByVal dwItem2 As Long)Const SHCNE_ASSOCCHANGED = &H8000000Const SHCNF_IDLIST = 0′ Destroy
Const HKEY_LOCAL_MACHINE = &H80000002′ modify the value of a setting for the VBA editor from the Registry” Possible values for SettingName are:’ AutoQuickTips2 (0/1)’ AutoStatement2 (0/1)’ AutoValueTips2 (0/1)’ BackGroundCompile (0/1)’
Private Declare Sub SHChangeNotify Lib “shell32.dll” (ByVal wEventId As Long, _ ByVal uFlags As Long, ByVal dwItem1 As Long, ByVal dwItem2 As Long)Const SHCNE_ASSOCCHANGED = &H8000000Const SHCNF_IDLIST = 0′ Create
Const HKEY_LOCAL_MACHINE = &H80000002′ read the value of a setting for the VBA editor from the Registry” Possible values for SettingName are:’ AutoQuickTips2 (0/1)’ AutoStatement2 (0/1)’ AutoValueTips2 (0/1)’ BackGroundCompile (0/1)’
he following tips are a collection of general hands-on techniques and recondite pieces of knowledge not associated with a specific platform, programming domain, or compiler. As such, they can be
Internet Information Server introduced the notion “Isolation Level”, which is also present in IIS4 under a different name. IIS5 supports three isolation levels, that you can set from the Home
Many compilers have a special switch for precompiled headers. A precompiled header is a binary file containing intermediate code that is the result of preprocessing and compiling an ordinary header
A link-time error such as the following is rather common: Related Posts Reasons to Invest in Legal Workflow SoftwareWading Into the Microsoft Azure SQL Elastic Database PoolInside the Climate Battle:
Different objects of the same class can access each other’s members, even if these members are private. For example: class A{ int n;public: void f(A* p) {p->n=0;}// another object’s private
Can you tell the difference between the following function calls? f(a,b);g((a,b)); // how many arguments are being passed to g? In the first example, the function f() is called with
Due to hardware limitations and the finite nature of computer arithmetic, certain numeric values cannot be represented properly. These values include infinity, negative infinity, and so on. The limits of