Hi all,
I'm hoping to get some ideas on how to write my subs, specifically on
passing variables into them and how best to do it.
Currently I do this:
example_sub ( $some_scalar, $some_hash_ref, 'some string' );
sub example_sub {
my ( $passed_scalar, $passed_hash_ref, $passed_string ) = @_;
}
This is fine, except when I want to pass in something else at a later
date, when I find I need the sub to do something extra, I have to go
back and update all of the calls to the sub that I wrote before.
So if I wanted to add $some_array_ref...
# A call to the sub that doesn't need to use the array_ref
example_sub ( $some_scalar, $some_hash_ref, [], 'some string' );
sub example_sub {
my ( $passed_scalar, $passed_hash_ref, $some_array_ref, $passed_string
) = @_;
}
I have to go back to all of the other calls to the sub and add an empty
array ref in the call.
I realise I could stick them on the end of the list to avoid doing this,
but I like them to be in a logical order. Any better suggestions?
I thought about using a hash instead of a list of variables.
example_sub (
{
some_scalar => $some_scalar,
some_hash_ref => $some_hash_ref,
some_string => 'some string',
}
);
So I could add to it any way I wanted and write them in any order.
Any better suggestions?
Thanks in advance,
Nigel
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