the LIST elements are ALWAYS passed via $_ per iteration.

you call twice w/o parameters so $_[0] is undef and undef*2 == 0!

take again a look at my "add"-example to distiguish between parameters and iteration value

Cheers Rolf

In reply to Re^3: Problems with map(function, array) by LanX
in thread Problems with map(function, array) by Redei

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