what is the difference between require and use in perl?

Question Posted / justin

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what is the difference between require and use in perl?..

Answer / jayakumar.b

use:
* Object Verification will happen @ Compile Time.
* File will have extention of .pm
* Module location will be set by @ISA Variable.

require:
* Object Verification will happen @ Run TIme.
* Method can be used from and .pm or .pl file.
* Absolute path to be given, if file located in different
dir.

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what is the difference between require and use in perl?..

Answer / rani

use:
1-its compile time concept & refresh the namespace for
different package loading.

Require:
it is run time concept & does not refresh the namespace for
different package loading.

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what is the difference between require and use in perl?..

Answer / vinoth_bksys

The differences are many and often subtle:

* use only expects a bareword, require can take a
bareword or an expression
* use is evaluated at compile-time, require at run-time
* use implicitly calls the import method of the module
being loaded, require does not
* use excepts arguments in addition to the bareword (to
be passed to import), require does not
* use does not behave like a function (i.e can't be
called with parens, can't be used in an expression, etc),
whereas require does

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