ifdef

n. 如果定义了

词形变化

ifdefs 复数 ifdefs

释义与例句

n.
  1. 1.

    A construct in source code that allows another part of the code to run only if a specified identifier is defined in the program.

    计算机 工程 数学

词源

A keyword in various programming languages, short for if defined.

来源：wiktionary