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Re^7: in search of a more elegant if then else

by BrowserUk (Pope)
on Feb 21, 2010 at 00:22 UTC ( #824449=note: print w/replies, xml ) Need Help??


in reply to Re^6: in search of a more elegant if then else
in thread in search of a more elegant if then else

Out of interest, do you have a preference amongst those 4?


Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

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Re^8: in search of a more elegant if then else
by TimToady (Parson) on Feb 21, 2010 at 03:13 UTC
    I have a vague preference for the last one, but only because it's most like how I'd actually write it:
    my @filtered = do for $s.comb -> $a, $b { [ $a, $b ] if $a ne $b; }
    or maybe slightly clearer would be:
    my @filtered = gather for $s.comb -> $a, $b { take [ $a, $b ] if $a ne $b; }
    But mathematicians are likely to prefer the list comprehension syntax, I suspect.

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