You can use for or foreach for aliasing variables or array/hash elements. Like this:

for($bar{foo}) {
    $_->() if $_;
}
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That's handy for very long expressions, and, when you assign something to $_, the original value of $bar{foo} will be changed too (that's what "aliasing" means), but I think you won't think it much of a gain in this simple case, either, as it still looks like your last example.