Re: quick question on modules

Normally no!

Use means that a module-function import() is called at BEGIN-time.

Normally this function is inherited by Exporter module and does only an aliasing of imported functions.

And aliasing costs only some bytes, not enough to be discussed.

But a module author can chose to define his own import and do whatever he wants... so no general answer here.

Cheers Rolf

Comment on Re: quick question on modules

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Re^2: quick question on modules by Corion (Patriarch) on Feb 01, 2013 at 09:47 UTC
A great counterexample is POSIX: Q:\>perl -MPOSIX -wle "print for grep {$_ =~ /$$/} `tasklist`" perl.exe 5508 Console 0 3.936 +K Q:\>perl -MPOSIX=strftime -wle "print for grep {$_ =~ /$$/} `tasklist` +" perl.exe 4904 Console 0 3.672 +K [download] POSIX.pm exports all its functions and constants by default, which costs 300K memory, while importing just the few needed functions reduces the amount of memory spent. tl; dr - just like you said, no general answer here.	[reply] [d/l]

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Re^2: quick question on modules
by Corion (Patriarch) on Feb 01, 2013 at 09:47 UTC

A great counterexample is POSIX:

Q:\>perl -MPOSIX -wle "print for grep {$_ =~ /$$/} `tasklist`"
perl.exe                    5508 Console                 0      3.936 
+K


Q:\>perl -MPOSIX=strftime -wle "print for grep {$_ =~ /$$/} `tasklist`
+"
perl.exe                    4904 Console                 0      3.672 
+K
[download]

POSIX.pm exports all its functions and constants by default, which costs 300K memory, while importing just the few needed functions reduces the amount of memory spent.

tl; dr - just like you said, no general answer here.

[reply]
[d/l]

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