ifdef

基本解释

• n.如果定义了

同根派生

英汉例句

• Actually it is not guaranteed that the file will be safely imported (ResEdit does not really understand #ifdef for example).
  实际上它是保证不的文件将会安全地被输入。
• Code for debug is written under conditional compilation, and the condition is such as the debug code is not embedded if the condition is not present (i.e. #ifdef DEBUG).
  用于调试的代码可以使用条件编译来包含，这样可以在调试的时候起作用，而发布版本失效（不被编译）。
• the Makefiles to these standard rules. -- rmk, mec ifdef USE_STANDARD_AS_RULE
  汇编文件生成预处理文件的标准规则。
• #ifdef WITH_ZLIB #include /* for zlibVersion() */ #endif zlib.
  h 存在，这句话的作用是什么？还有为什么第...
• - The #ifdef test can be omitted if the code doesn't need to compile against pre-8.2 PostgreSQL releases.
  + 如果代码不必在 PostgreSQL 8.;2 之前的版本里编译，那么可以忽略 %23ifdef 测试。