... an even number of arguments...
I will add a manual check.

What are you doing with the arguments subsumed under the  % prototype? Well, right now you're probably just writing test code to check the behavior of the prototype, but in a 'real world' case, would you not assign these arguments to a hash? What else? If assigning an odd number of elements to a hash, Perl warns (if warnings are enabled) with no separate check necessary. Granted, the warning doesn't stem from the prototype checking system, but...

>perl -wMstrict -le
"sub H (&%) { my ($cr, %h) = @_;  $cr->(%h); }
 ;;
 H { print @_; } qw(a 1 b);
"
Odd number of elements in hash assignment at -e line 1.
Use of uninitialized value $_[3] in print at -e line 1.
a1b
[download]

not in this case, cause I want to have it as fast and memory saving as possible.

thats why I'm splicing... though using indexes $_[$i] should be even faster...

just check the post I linked in the OP

Cheers Rolf

not in this case, cause I want to have it as fast and memory saving as possible.

Then why create a list from the hash in the first place?

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