Perl local 函数
描述
This function sets the variables in LIST to be local to the current execution block. If more than one value is specified, you must use parentheses to define the list.
Note that local creates a local copy of a variable, which then goes out of scope when the enclosing block terminates. The localized value is then used whenever it is accessed, including any subroutines and formats used during that block.
语法
以下是此函数的简单语法 −
local LIST
返回值
此函数不返回任何值。
示例
以下是显示其基本用法的示例代码 −
#!/usr/bin/perl -w local $foo; # make $foo dynamically local local (@wid, %get); # make list of variables local local $foo = "flurp"; # make $foo dynamic, and init it local @oof = @bar; # make @oof dynamic, and init it
