JBuilder’s templates allow you to insert some of the most common Java instructions into the editor. For instance, suppose you want to add a main method to a class. Instead

It’s possible to use the dir() and the dir$() functions to list directories. However, many programmers handle the two first returns from the functions “.” and “..” by using an

To reduce the number of fraction digits in a double type variable, follow the code sample below. This can be useful in money calculations. Firstly, create a NumberFormat instance and

It is possible to sort any type of array of elements, even if you don’t know a sorting algorithm. First, pass an array variable to sort the method (which is

When exception specifications were added to C++ a few years ago, they looked very promising. However, as is often the case in a programming language Related Posts Java Support for

When multiple base classes have members with identical names, this can lead to ambiguities in the derived class, even if the signatures of the member functions in question are distinct.

In the following example, a member initialization list appears in the inline definition of the constructor, inside the class body: class ratio {private: int x, y;public: ratio(int top, int bot)

You can press Ctrl-Spacebar to make IntelliSense prompt you for variables, methods, properties, or events at any point in a code window.For example, if you have a variable named myvariable,

This function removes attributes from files in the folder you specify in strFolder. It also can walk down all subfolders of this folder recursively. This function was written mainly for

It’s common VB knowledge that you can omit the default property of a control or an object. For example, statements such as Text1.Text = “blah” and Text1 = “blah” are

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Database applications often need to forbid user input to combo boxes, which limits the user to a given set of choices. But just as often, these apps need to assign

If the LINK environment variable is set to /MAP when VB launches, you’ll get a MAP file whenever you Make EXE, even when you are not generating debug symbols. Keeping

I often find it necessary to check that a string is valid by ensuring it exists in a list of strings. For instance, you might need to check that a

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In general, disabling inheritance is a dubious idea. Yet under some circumstances it may be useful. To do this, declare the class in question (called A in our example) as

A template Related Posts Biased AI in Recruitment Raises ConcernsAdding Longs Without OverflowingArmed Commercial Drones To Be in the SkiesAmazon Launches New Cloud Development ToolsMoving a File Using Java

Sometimes you don’t want to enable the option of running more than one instance of an executable at a time. This can be achieved by using this fragment of code:

The algorithms in the standard C++ library are generic and, as such, can be inefficient (or unavailable) with certain containers.For example, the std::swap algorithm is generic but lists define an

C-style arrays can be passed as containers to STL algorithms. The pointers to array elements can be used as iterators.Example: #include #include int main(){ int array[] = { 1, 3,

If no other classes can derive from a class, then you know that all the pointers to that class point to objects of a uniform size. This can simplify memory

There is nothing intrinsically evil about ‘switch’ statements. However, they do sometimes result from improper Object Oriented design. There are twodesign principles to keep in mind.1. Open/Closed Principle: this states

The following code reads one string, and prints the length of that without using strlen(): #include #include int main(){ char s[20]; gets(s); printf(” %d “,printf(“%s”,s));/*return type of printf() is int.

// This example shows how we can use a non static// member variable or function in a static// member functionclass CClass{public: int m_Var;private: static CClass m_ptClasspublic: static void StaticMemberFonction();}CClass::CClass(){ ptClass

SQL Server stores datetime data in 8 bytes. The first four bytes represent the date and the second four represent the time. To axe off the time part of the

This method works for the MFC derived class and was tested on a Dialog-based class. Set Active Project Select Project –>Add to Project –>Components and Controls –> VC++ Components –>

When you write an IDL file and need to add specific C++ code in the header file created after MIDL compilation, you can use the the cpp_quote(” “) IDL construct.

There are two very annoying–yet completely avoidable–nesting errors that occur in C/C++ programming.1) This one typically happens toward the end of the day, thereby making the day longer: for (int