如何让 perl -c 抛出未定义或未声明的函数错误? [英] How do I get perl -c to throw Undefined or Undeclared function errors?

问题描述

来自 C++ 背景，我虔诚地使用 Perl 的 use strict 和 use warnings 特性:

Coming from a C++ background, I religiously use the use strict and use warnings features of Perl:

#!/usr/bin/perl -w
use strict;
use warnings;

$foo = 1; #Throws "$foo" requires explicit package name error

foobar( 1 );  

use strict 结构对于在您输入错误的变量名时捕获错误非常有帮助.是否有等效的构造来捕获错误输入的函数名称?在上面的例子中，如果有类似 perl -c 的东西可以捕捉到没有 foobar 函数可以调用的事实，那就太好了.当然运行脚本会抛出一个未定义的子程序错误，但我想早点发现它.

The use strict construct is immensely helpful to catch errors when you mistype a variable name. Is there an equivalent construct to catch mistyped function names? In the above example, it would be great if there was something like perl -c that caught the fact that there is no foobar function available to call. Of course running the script throws an Undefined subroutine error, but I would like to catch it sooner.

推荐答案

试试这个:

perl -MO=Lint -cw /path/to/script.pl

这使用 B::Lint 模块.

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