Re: Shortcut operator for $a->{'b'}=$b if $b;

[Codon]

What is the correlation between 'b' and $b? Is one used to derive the other? If so, then map may help.

$a = {
    map {
        $val = some_derivation($_)
            ? ( $_ => $val ) 
            : ()
    } qw(a b c)
};

[rokadave]

No correlation at all. This all started when I discovered the ||= operator, which test the assignee for truth, upon false assigns the assignor. I wanted to test the other side, and assign upon false.

I think my answer is no.

[ikegami]

"assigns the assignor"? Every definition I can find for "assignor" defines it as the person (or in the case operator) who does the assignment. In other words, "=" is the assignor, not "$b".

The standard terminology for assignments is "lvalue" for the variable receiving the value (which is usually on the *l*eft) and "rvalue" for the value being copied (which is usually on the *r*ight).