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Re^2: What operator prepends?

by swampyankee (Parson)
on Jan 25, 2006 at 21:56 UTC ( #525579=note: print w/ replies, xml ) Need Help??


in reply to Re: What operator prepends?
in thread What operator prepends?

Why not just something like

$string = $prefix . $string;

emc

" When in doubt, use brute force." — Ken Thompson


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Re^3: What operator prepends?
by Tanktalus (Canon) on Jan 25, 2006 at 22:21 UTC

    First off, "= [...] ." isn't an operator as per the original topic. That's two operators. ;-)

    However, more importantly, this is just not how I mentally think of creating a string. If I want to generate a string such as "this is the output", I don't think about starting with the string "output" and prepending a bunch of stuff. I think about how to create "this", then I think of how to create "is", etc. It's actually quite rare that I'll want to generate "the" before I generate "is". In fact, I often end up with code like this:

    my @text; push @text, generate_this(); push @text, generate_is(); push @text, generate_the_output(); return join ' ', @text;
    That's just how I think of the string, and I find that when my code matches the problem in my head, it's far less likely to have bugs in it. Especially expensive design bugs.

      I also tend to create my strings from left to right, probably because that's how I tend to write. I add stuff to the end -- push vs unshift -- so a "prepend" operator is not something I would think to include in a language design.

      Perhaps inaccurately, I don't think of .= the "append" operator; I think of it as an abbreviation for $string = $string . $more.

      emc

      " When in doubt, use brute force." — Ken Thompson

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