conditional compilation

Conditional compilation variables can be used to determine the version information of the engine interpreting a script.

Conditional compilation variables and statements can hide JScript code from engines that do not support conditional compilation.

Lists and discusses the statements that control compilation of a script depending on the values of the conditional compilation variables .

Discusses how the compiler uses conditional-compilation to select particular sections of code to compile, while excluding other sections.

Conditional compilation constants determine whether tracing and debugging statements should be compiled into the assembly.

These conditional compilation directives can "hide" code by turning off the emission of debug symbols and resetting the line position.

Adding, removing, or changing the evaluation expression of a conditional compilation statement.

Specifies symbols on which to perform conditional compilation.

Consequently, hosts that do not support conditional compilation can ignore it.

Conditional compilation is typically used to compile the same program for different platforms.

This enables hosts that do not support conditional compilation to ignore this code.

You can use these constants only for conditional compilation; they cannot be used in executable code.

Conditional compilation statements are designed to run during compile time, not at run time.

Conditional compilation constant to determine whether to compile certain statements .

This allows hosts that do not support conditional compilation to ignore it.

Conditional compilation allows you to easily control at compile time what code to include in your program.

A preprocessing step performs macro substitution on program text, inclusion of other source files, and conditional compilation.

When writing a script for a Web page, always place conditional compilation code in comments.

Lists predefined constants available for conditional compilation.

Describes prohibited edits of conditional compilation directives.

When you write a script for a Web page, always put conditional compilation code in comments.

Lists the predefined variables available for conditional compilation.

Conditional compilation constants have a special scope and cannot be accessed from standard code.

You can use conditional compilation to select particular sections of code to compile, while excluding other sections.

Use the project settings for defining conditional compilation constants.

Indicates to compilers that a method call or attribute should be ignored unless a specified conditional compilation symbol is defined.

In most cases, even this tiny change will be totally automatic thanks to the wonders of conditional compilation.

Most changes to conditional compilation directives are not allowed while in Edit and Continue mode.

Defines symbols for conditional compilation.

The scope of a conditional compilation constant is dependent on the way it is set.

Conditional -compilation constant is set to for several project types .

Conditional compilation statements can appear almost anywhere in your source file.

To achieve this mapping, you may include conditional compilation #ifdef in places where you access the registers.

Conditional compilation is also useful for server-side scripts and command-line programs.

You must set the _MYTYPE conditional-compilation constant to the string "Empty" to remove the My object.

In the Conditional Compilation Symbols text box, add OPTIMIZED_EXPORTDATA.

A program can also contain conditional compilation statements.

Visual Basic introduces a new conditional compilation constant, VBC_VER, for all projects.

The meaning of the conditional-compilation directives used in the above examples is as follows

Explains what conditional compilation is used for, and discusses the

You can set conditional compilation constants in one of three ways

TRUE By default, undefined conditional-compilation constants resolve to

You can use the following techniques to define conditional compilation symbols

With the help of conditional compilation, you can use a macro that inserts braces only when they are needed

Visual Basic introduces the following new conditional-compilation constants for all projects