You might want to read about eval.

eval is sometimes used to probe loading of modules and act accordingly when loading fails by examining $@. 

eval { require Foo::Bar };
die $@ if $@;

[download]

is "functionally" almost equal to 

use Foo::Bar;

[download]

If you read carefully through the documentation, you'll see there are many other interesting use cases for eval. You should also give Super Search a try since others have already provided useful insight.

In reply to Re: Question about eval by shigetsu
in thread Question about eval by tiny_tim

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