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RE: rethinking printf
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From:
Brent Dax
Date:
March 10, 2002 16:41
Subject:
RE: rethinking printf
Message ID:
FJELLKOPEAGHOOODKEDPKEDMDFAA.brentdax@cpan.org
Uri Guttman:
# >>>>> "BD" == Brent Dax <brentdax@cpan.org> writes:
#
# BD> I think qn counts as weird syntax. I ask again, what's
# wrong with one
# BD> of:
#
# BD> sprintf("%hash\%s", $string);
#
# BD> sprintf(%hash.'%s', $string);
# BD> sprintf('%s%s', _%hash, $string);
#
# what if you want to use %hash{width} as a field precision? i
# don't like
# the idea that all format specifiers would be the noisy \%s. they are
# much more common than using hashes in format strings. now as i said in
# another post, you can use the * method but i never liked it.
# in c it was
# the only decent solution to dynamic precisions (other than doing a
# sprint of the format string itself which loses). in perl,
# interpolation
# makes that easier but i have rarely seen hashes used in that
# way. a temp
# variable is as good a solution for that too.
#
# $prec = %hash{width} ;
# sprintf( qf"%${prec}s", $string);
#
# sprintf( "\%${prec}s", $string);
#
# is one of your alternatives. :-/
You forgot one.
sprintf('%'_%hash{width}_'s', $string);
Not horribly pretty, true, but not bad enough to justify writing a
quoting hack into the language. (And yes, I do consider 'qf' a quoting
hack.)
--Brent Dax <brentdax@cpan.org>
@roles=map {"Parrot $_"} qw(embedding regexen Configure)
#define private public
--Spotted in a C++ program just before a #include
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