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Re^2: Unifying namespaces of @name and $name to simplify dereferencing?by LanX (Saint) |
on Mar 25, 2016 at 19:37 UTC ( [id://1158794]=note: print w/replies, xml ) | Need Help?? |
Hello Shmem Thanks for meditating! =) > This would allow either the association of $identifier with @identifier or %identifier, but not both yes I was sloppy with the "vice versa" part in my OP. > To allow both, hashes and arrays have to collapse into one data structure, No, no, no that is not my intention. Perl has the advantage that $identifier is an universal untyped scalar which can hold any string, number or reference. I'm understanding now that for the reverse direction (assigning a ref) we'd need a declaration clarifying the type, this could be my $identifier[] = [1,2,3] and/or my \@indentifier = [1,2,3] , both¹ with the same effect of aliasing $indentifier to \@indentifier So using something like would cause 2 redeclaration errors at compile-time because $name is already taken, so no need for a unifying data structures like in PHP, it's just an aliasing trick to simplify syntax of common data structures. Besides this opens the possibility of run-time checking of assigned data types and consequently further OP-code performance optimizations.
Cheers Rolf
¹) not sure about the best syntax, but both possibilities can't conflict with older code because they are illegal ATM. ... Other suggestions?
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