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Unlike some other macro processors, m4 is Turing-complete as well as a practical programming language. Unquoted identifiers which match defined macros are replaced with their definitions. Placing identifiers in quotes suppresses expansion until possibly later, such as when a quoted string is expanded as part of macro replacement.
An anaphoric macro is a type of programming macro that deliberately captures some form supplied to the macro which may be referred to by an anaphor (an expression referring to another). Anaphoric macros first appeared in Paul Graham's On Lisp and their name is a reference to linguistic anaphora—the use of words as a substitute for preceding ...
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This can cause problems when trying to play back a macro if the user's desktop environment has changed. For example, if the user has changed their desktop resolution, moved icons, or moved the task bar, the mouse macro may not perform the way the user intended. That's one of the reasons for preferring keyboard macros over the mouse-oriented ones.
Microsoft Macro Assembler (MASM) is an x86 assembler that uses the Intel syntax for MS-DOS and Microsoft Windows. Beginning with MASM 8.0, there are two versions of the assembler: One for 16-bit & 32-bit assembly sources, and another ( ML64 ) for 64-bit sources only.
When personal computers were initially released in the 1970s and 1980s, they typically included a version of BASIC so that customers could write their own programs. . Microsoft's first products were BASIC compilers and interpreters, and the company distributed versions of BASIC with MS-DOS (versions 1.0 through 6.0) and developed follow-on products that offered more features and capabilities ...
Macro (computer science), a set of instructions that is represented in an abbreviated format; Macro instruction, a statement, typically for an assembler, that invokes a macro definition to generate a sequence of instructions or other outputs; Macro key, a key found on some keyboards, particularly older keyboards.
This example aims to improve the readability of the X macro usage by: Prefix the name of the macro that defines the list with "FOR_". Pass name of the worker macro into the list macro. This both avoids defining an obscurely named macro (X), and alleviates the need to undefine it. Use the syntax for variadic macro arguments "..." in the worker ...