Changing keys in a “for ( keys %hash ) {}”-loop

Question

I remember something about not changing the keys in a

for my $key ( keys %hash ) { ...

for example

for my $key ( keys %hash         


        

Answer 1

But , if you want change key name .

you can delete the keys from hash , then create the key with exist values as you want. this could be a one work around for this requirement