... is there a perlVar or function that is the TRUE array of hash
key ... that,when changed, changes the keys ...
Others have answered this in the negative and explained why it can't
be done. In support, consider that a hash (or associative
array) key is an index of the array. Would you expect that in
a positional array @ra there would be some way to
directly operate on the index of element $ra[1] (i.e., 1) to
change it to, say, 42 and expect the element to change its position
in the array correspondingly? I suppose this kind operation is
conceivable, but the fact that it doesn't exist in any language
(AFAIK) suggests its inutility. (Update: I'd be
interested to know if there's a language with an operator like this
for either type of array.)
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