Re^5: Use module only if it is in use

I don't want to load helper modules that potentially won't be used.

How does not calling the sub you need to call solve that?

The actual solution is to delay loading the module until you need it.

sub rarely_called {
    require Text::Unidecode;
    return Text::Unidecode::unidecode($_[0]);
}
[download]

You can throw in an import in there if you so desire.

sub rarely_called {
    require Text::Unidecode;
    import Text::Unidecode qw( unidecode );
    return unidecode($_[0]);
}
[download]

Comment on Re^5: Use module only if it is in use Select or Download Code

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Re^6: Use module only if it is in use (self-loading) by ikegami (Patriarch) on Sep 02, 2009 at 16:23 UTC
Cute alternative: `sub unidecode { require Text::Unidecode; no warnings 'redefine'; *unidecode = \&Text::Unidecode::unidecode; goto &unidecode; }` [download]	[reply] [d/l]
Re^6: Use module only if it is in use by vitoco (Hermit) on Sep 02, 2009 at 16:33 UTC
Shouldn't that have a relevant overhead when used as: `while ($line = <F>) { chomp($line); $line = rarely_called($line) if $asciify; ... }` [download] BTW, I did something like that (using `eval`), but checking a flag to `require` the module only in the first call.	[reply] [d/l] [select]
Re^7: Use module only if it is in use by ikegami (Patriarch) on Sep 02, 2009 at 16:45 UTC
Benchmark and find out. Or use the self-loading alternative. Or split the initialisation from the actual use. `require Text::Unidecode if $asciify; while ($line = <F>) { chomp($line); $line = Text::Unidecode::unidecode($line) if $asciify; ... }` [download]	[reply] [d/l]