Ie. Could not the application of magic to an array, and all the penalties that go with it, be deferred until it is used in an lvalue context?

ehm, that sounds like a very risky approach for tuning an edge case:

  DB<7> sub tst { $_[0]=3 }
 
  DB<8> @a=(1..10)
 
  DB<9> tst $#a
 
  DB<10> p @a
1234

[download]

personally I wouldn't care too much about the performance penalty, but the possible side-effects after forgetting that $#a is an lvalue and $_[0] is an alias, should be a reason enough to stick with scalar @a.

Cheers Rolf

In reply to Re^6: Does @{ } copy arrays? by LanX
in thread Does @{ } copy arrays? by tford

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