Perl 使用/需要绝对路径? [英] Perl use/require abolute path?

问题描述

如果我有一个 .pm 文件，有没有一种方法可以使用它，而无需将它放在我的 @INC 路径上?我认为这在我的特定用例中会更清晰 - 比使用相对路径或将此目录添加到 @INC 更清晰.

If I have a .pm file, is there a way I can use it, without placing it on my @INC path? I think that would be clearer in my particular use case - clearer than using relative paths or adding this directory to @INC.

澄清:

我希望避免遍历 @INC 中的每一项的必要性，而是直接指定我感兴趣的文件.例如，在 Node.JS 中，require('something') 将搜索路径列表，但 require('/specific/something') 将直接转到我告诉它的地方.

I was hoping to avoid the necessity to iterate through every item in @INC, and instead specify directly which file I am interested in. For example, in Node.JS, require('something') will search the list of paths, but require('/specific/something') will go directly where I tell it to.

在 Perl 中，我不确定这是否与 require 中的功能相同，但它似乎有效.

In Perl, I am not certain that this is the same functionality found in require, but it seems to work.

然而，use 语句需要裸字.这让我对如何进入绝对路径有点困惑.

However, use statements require barewords. That has left me a little stumped on how to enter an absolute path.

推荐答案

根据评论中的讨论，我建议使用 require 本身.如下图，

As per discussion in comments, I would suggest using require itself. Like below,

require "pathto/module/Newmodule.pm";

Newmodule::firstSub();

您也可以使用以下其他选项

Also you can use other options as below

• use lib 'pathto/module'; 需要将此行添加到要在其中使用模块的每个文件中.

• use lib 'pathto/module'; This line needs to be added to every file you want to use the module in.

使用 lib 'pathto/module';
使用新模块；

use lib 'pathto/module';
use Newmodule;

• 使用 PERL5LIB 环境变量.使用 export 在命令行上设置或将其添加到 ~/.bashrc 以便每次登录时它都会添加到您的 @INC.记住 PERL5LIB 在所有 @INC 目录之前添加目录.所以会先用.您也可以使用

  • using PERL5LIB environment variable. Set this on command line using export or add this to ~/.bashrc so that with every login it will be added to your @INC. Remember PERL5LIB adds directory before all @INC directories. So it will be used first. Also you can set it in apache httpd.conf using

    SetEnv PERL5LIB /fullpath/to/module
    

  • 或者在 BEGIN 块中设置.

  • Or set it in BEGIN block.

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