mkdir has a prototype of $;$:

perl -we "print prototype('CORE::mkdir')"
$;$

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This means that the first variable in the call to it will be put into scalar context. Most likely, you have now a subdirectory named "2" in ~/LGRID_Machine/examples, because @a evaluated to the number of elements (2).

To solve your larger problem of calling arbitrary builtins with the appropriate parameters, I think you will have to explicitly pass the parameters:

mkdir $a[0], $a[1];

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instead of

mkdir @a;

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Creating the appropriate calls can maybe be done by inspecting prototype("CORE::$function"), but some functions (like print) don't even have a prototype because they are super special.

In reply to Re: mkdir with a list variable by Corion
in thread mkdir with a list variable by casiano

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