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I suppose you want to assign default values to empty arrays only ("doesn't work" ???)

Using defined doesn't make sense here (see also hdb's reply), and the other expression has to be analogous to

DB<125> @a=() DB<126> @a = (@a || ( 1..3 )); => (1, 2, 3) DB<127> @a = (@a || ( 4..6 )); => 3

But the second case fails cause the LHS of an or operator is evaluated in scalar context.

We had a longer discussion about this some weeks ago, which I didn't really follow (maybe somenone can link to it)

FWIW this works:

DB<138> @a=() DB<139> @a = (4..6) if !@a => (4, 5, 6) DB<140> @a=() DB<141> @a = @a ? @a : ( 1..6 ) ; => (1, 2, 3, 4, 5, 6) DB<142> @a = @a ? @a : ( 42 ) ; => (1, 2, 3, 4, 5, 6) DB<143> @a = (4..6) if !@a => "" DB<144> \@a => [1, 2, 3, 4, 5, 6]

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re: Conditional array initialisation? by LanX
in thread Conditional array initialisation? by BrowserUk

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    [choroba]: My recent record is 10km in 1 hour :)
    [perldigious]: Nice erix... perldigious' legs are so sore from portaging his kayak from place to place last weekend he can barely hobble 12m. :-)
    [erix]: you're faster than me then :)
    [erix]: well, at the moment, that is :)
    [erix]: I should lose some weight although I keep telling myself that I'm doing extra training by lugging it along
    [erix]: I saw a common kingfisher and a couple of bullfinches
    [erix]: bullfinch ( a male and a female )
    erix learned the word 'portaging' not so long ago (from vikings lugging their ships from one river-system to another)

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