in reply to Re^2: CGI.pm - multiple values for same field name
in thread CGI.pm - multiple values for same field name

A common way to access an array or a hash is one scalar element at a time. You can also subscript a list to get a single element from it.

And by doing so, you get a list slice. A single-index slice is still a slice. The difference between a slice and indexing is the context in which the index expression is evaluated. 

my @indexes = (3);

my @array = (0,1,2,3,4);
print($array[@indexes], "\n");  # 1 => index
print(@array[@indexes], "\n");  # 3 => slice

print((0,1,2,3,4,5)[@indexes], "\n");  # 3 => slice

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There's no native syntax to index a list.

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Re^4: CGI.pm - multiple values for same field name
by shmem (Chancellor) on May 25, 2007 at 15:30 UTC
    The difference between a slice and indexing is the context in which the index expression is evaluated.

    I see. That's why this sentence is found under Slices in perldata. Learnt something new today, thank you.

    update: looks like a statement like this one deserves downvoting for some. *shrug*

    --shmem 

    _($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}
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