Question: I need to perform a validation on five fields in a form. The logic is: If field1 length >0 then disallow form submission if field2,field3, field4, and field5 are

Question: I want to set up a series of links in a pop-up window which, when clicked, will (a) close the popup window and (b) redirect the main page to

The iostream family of classes provides the following member functions and operators for checking the stream’s state: bool good() // returns true if no error flag is setbool eof() //

An expression may consist of one or more subexpressions. You can group several expressions in one statement and separate them with commas. For example: if(++x, –y, cin.good()) // three expressions

A recent subscriber of one of the C++ newsgroups posted the following question:Why did the C++ standardization committee created a const_iterator instead of a const iterator? Or, at least, why

In certain contexts, you have to treat a vector as an array of its elements. For example, suppose you have a function that takes int * as its argument. How

The associative containers std::map, std::multimap, std::set, and std::multiset have the following three overloaded forms of the member function erase(): class map // simplified for brevity{public://..other members void erase(iterator position); //

Question: Every class in Java is supposed to extend the Object class by default. In case a user class extends some other class (e.g., if myclassextends yourclass), then is it

Question: After I have already declared an object, how can I call its constructor again to re-initialize its member variables? Answer: You can’t do that. C++ guarantees that for each

Question: What is the purpose of static methods in Java? Answer: Static methods can be invoked without an instance of an object. They provide the ability to execute methods in

Question: Can I specify the column I want to select from as an argument to the procedure? Something like: create procedure show_product(language char(2), ID integer) returning char(255);define p_prod_name CHAR (255);select

Question: I cannot initialize the program after I have installed it. When I run “oninit”, it seems to work, but then when I run “onstat” it tells me that the

Question: In Informix SE, I can use ISQL to generate a default form from a table and then query, update, or delete data within the form? How do I do

Question: Is there a way to perform a selective restore? I need to restore just one mailbox or public folder. I’m using the NT backup/restore utility. Answer: I’m afraid not.

Question: What are some of the ways that databases can be secured so that they can’t be hacked into, etc.? Answer: The first level of security is always the OS

Question: I am using Informix 7.24 and my raw partitions are getting quite large. Is there a way to tell the size of a database? I could then decide which

Question: How can ‘Ontape’ functions be used to back up Informix/Lawson DB to disk? Is dbspace required or can a large area in a directory (e.g., /gsc/bigspace) be used? Answer:

Question: Which is faster, LOCATE (without parameters) or GO TOP? How fast is the one from the other? Why is one faster than the other? Answer: They are usually equal

‘ convert a reversed full name back to the “FirstName LastName” format” for example, ConvertReverseFullName(“Smith, John A.”) ==> “John A. Smith”Function ConvertReverseFullName(ByVal ReverseFullName As String) As String Dim i As

‘ convert a string to camel case’ for example: CamelCase(“new file name”) => “NewFileName”‘Function CamelCase(ByVal Text As String) As String Dim i As Long ‘ convert all non-alphanumeric chars to

‘ Modify a phone-number to the format “XXX-XXXX” or “(XXX) XXX-XXXX”.Function FormatPhoneNumber(ByVal text As String) As String Dim i As Long ‘ ignore empty strings If Len(text) = 0 Then

‘ reverse a full name” for example: ReverseFullName(“John A. Smith”) ==> “Smith, John A.”Function ReverseFullName(ByVal FullName As String) As String Dim i As Long ‘ search for the last space

‘ Takes a first and last name and converts it to the format LastName, FirstNameFunction FormatFullName(ByVal FirstName As String, ByVal LastName As String) As _ String FirstName = Trim$(FirstName) LastName

‘ change a sentence in CamelCase to a sentence with spaces’ for example ConvertCamelCase(“FileExchange”) => “File Exchange”Public Function ConvertCamelCase(ByVal Value As String) As String Dim i As Long For i

‘ Format a credit card numberFunction FormatCreditCard(ByVal text As String) As String Dim i As Long ‘ ignore empty strings If Len(text) = 0 Then Exit Function ‘ get rid

Question: I’ve done a lot of programming in Java, and am relatively new to C++. One of the things that annoys me (just personally), is using a prefix such as

Question: In my class declaration I have a member: CSomeUsefulClass* m_one; In my implementation file, there is a function: DoMyThing(){CSomeUsefulClass* m_two;m_two = new CSomeUsefulClass(param1, param2);//blah…m_one = m_two;//do my thing…} then

We can speed up the data transfer between servlet and applet in a Web application by compressing the data transferred between them. The example below demonstrates how this is done: