in reply to Re^11: Specializing Functions with Currying
in thread Specializing Functions with Currying

first is pure-Perl and does not have short-circuiting behaviour.

And if you look at the the source just before the pure perl reduce definition we find:

eval <<'ESQ' unless defined &reduce;

# This code is only compiled if the XS did not load

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:-)

So the reduce() in question may, or may not, be pure perl.

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Re^13: Specializing Functions with Currying
by Aristotle (Chancellor) on Aug 09, 2004 at 14:34 UTC

    Oops.

    Interesting, also, that the XS version does short-circuit. I looked at the source and thought I could see that, but I don't know XS so to be sure, I tested. And lo:

    $ perl -MList::Util=first -le'@_=(0)x100; first { ++$a; $_ == 0 } @_; 
+print $a'
1

    [download]

    Hmm.

    Makeshifts last the longest.

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[d/l]
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