Hi Luca,
Doesn't it autovivify $hash_ref->{$key} when you push $new_value to it?
At least when I tested the following code, it worked.
push @{ $hash_ref->{$key} }, $new_value;
Regards,
Jing
On 23 Sep 2013, at 20:12, Luca Ferrari <[email protected]> wrote:
> Hi,
> in my applications often I end up with an hash ref that contains array
> refs, and each time I have to insert a new element in the array for a
> specific key I write something like:
>
>
> if ( ! exists $hash_ref->{ $key } ){
> $hash_ref->{ $key } = [];
> }
>
> push @{ $hash_ref->{$key} }, $new_value;
>
>
> Is there a better and shorter pattern to push the new value in an
> array ref creating it if it does not yet exists in the hash?
>
> Thanks,
> Luca
>
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