你为什么要放一个1?在Perl 5模块的末尾? [英] Why do you have to put a 1; at the end of a Perl 5 module?

问题描述

为什么所有Perl 5模块都必须以1;结尾?

Why do all Perl 5 modules have to end with 1;?

推荐答案

Perl模块必须以真值结尾，否则将被认为不 已加载.按照惯例，该值通常为1，尽管可以为 任何真实的价值.模块可以以false结尾以指示失败，但是 这很少使用，它会改为die()(错误退出).

A Perl module must end with a true value or else it is considered not to have loaded. By convention this value is usually 1 though it can be any true value. A module can end with false to indicate failure but this is rarely used and it would instead die() (exit with an error).

来源: Wiki

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