I find statement modifiers to be the clearest way to write code, but maybe I'm just used to them. Still, I'm having trouble seeing why turning a standard for loop into a statement modifier cuts down on the memory usage. Why are examples A and B below different? Is it that the parentheses cause a list to be created in memory? Would example C be as bad as A?
# A
for ( sort keys %h ){
dostuffwith($_);
}
# B
dostuffwith($_) for sort keys %h;
# C
dostuffwith($_) for (sort keys %h);
I guess I need to learn to benchmark memory usage.
Aaron B.
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