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use happens at compile time, so before the if gets checked.

Yes, I know you've put it in a BEGIN { ... } block, so the if also happens at compile time, but the use is happening at a compile-time within compile-time, if you see what I mean.

One solution is to not use use and use require;import instead.

BEGIN { if ($ENV{USE_XYZ} == 1) { require XYZ; XYZ->import(); } }

Another option is to take advantage of the core module if (if.pm).

use if $ENV{USE_XYZ}, "XYZ";

In rare cases, if you're loading something that does weird funky stuff at compile time, the first option won't work well. The second option should generally be okay.


In reply to Re: Using perl module if env is enabled by tobyink
in thread Using perl module if env is enabled by ovedpo15

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