Hi,
If I want to run a subroutine passing some parameters, which is the best way
to do it if that subroutine won't modify those parameters but just use them?
1.
&subroutine(%hash);
sub subroutine {
%hash = @_;
}
2.
&subroutine(\%hash);
sub subroutine {
$ref = shift;
$hash = %$ref;
}
3.
&subroutine(%hash);
sub subroutine {
$ref = { @_ };
}
4.
&subroutine({ %hash });
sub subroutine {
$ref = shift;
}
The most important thing is the speed and using as less memory as possible.
Thank you.
Teddy
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