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macro    音标拼音: [m'ækro]
宏,宏功能

巨集,巨集功能

macro
巨式;巨集;巨集(指令)

macro
巨集

macro
adj 1: very large in scale or scope or capability
n 1: a single computer instruction that results in a series of
instructions in machine language [synonym: {macro}, {macro
instruction}]

macro \macro\ a.
very large in scale or scope or capability; as,
macroeconomics.
[WordNet 1.5]


Macro- \Mac"ro-\pref. [Gr. makro`s, adj.]
A combining form signifying long, large, great; as
macrodiagonal, macrospore, macromolecule, macrocosm.
[1913 Webster]


macro \macro\ n. [shortened form of macroinstruction]
1. a single computer instruction which symbolizes, and is
converted at the time of program execution or by a
compiler into, a series of instructions in the same
computer language.
[WordNet 1.5]

2. A keystroke (or combination of keystrokes) which
symbolizes and is replaced by a series of keystrokes; -- a
convenient feature of some advanced programs, such as word
processors or database programs, which allows a user to
rapidly execute any series of operations which may be
performed multiple times. Such macros may typically be
defined by the program user, without rewriting or
recompiling the program.
[PJC]

A name (possibly followed by a {formal argument} list) that is
equated to a text or symbolic expression to which it is to be
expanded (possibly with the substitution of {actual
arguments}) by a macro expander.

The term "macro" originated in early {assemblers}, which
encouraged the use of macros as a structuring and
information-hiding device. During the early 1970s, macro
assemblers became ubiquitous, and sometimes quite as powerful
and expensive as {HLLs}, only to fall from favour as improving
{compiler} technology marginalised {assembly language}
programming (see {languages of choice}). Nowadays the term is
most often used in connection with the {C preprocessor},
{Lisp}, or one of several special-purpose languages built
around a macro-expansion facility (such as {TeX} or {Unix}'s
{troff} suite).

Indeed, the meaning has drifted enough that the collective
"macros" is now sometimes used for code in any special-purpose
application control language (whether or not the language is
actually translated by text expansion), and for macro-like
entities such as the "keyboard macros" supported in some text
editors (and {PC} {TSRs} or {Macintosh} INIT/CDEV keyboard
enhancers).

(1994-12-06)

macro: /mak´roh/, n. [techspeak] A name (possibly followed by a formal
arg list) that is equated to a text or symbolic
expression to which it is to be expanded (possibly with the substitution of
actual arguments) by a macro expander. This definition can be found in any
technical dictionary; what those won't tell you is how the hackish
connotations of the term have changed over time.The term macro originated in
early assemblers, which encouraged the use of macros as a structuring and
information-hiding device. During the early 1970s, macro assemblers became
ubiquitous, and sometimes quite as powerful and expensive as
HLLs, only to fall from favor as improving compiler
technology marginalized assembler programming (see
languages of choice). Nowadays the term is most often used in connection
with the C preprocessor, LISP, or one of several special-purpose languages
built around a macro-expansion facility (such as TeX or Unix's [nt]roff
suite).Indeed, the meaning has drifted enough that the collective macros is now sometimes used for code in any
special-purpose application control language (whether or not the language
is actually translated by text expansion), and for macro-like entities such
as the keyboard macros supported in
some text editors (and PC TSR or Macintosh INIT/CDEV keyboard
enhancers).

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