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Re^3: Converting a list of numbers to use a range operator

by LanX (Canon)
on Mar 24, 2013 at 14:18 UTC ( #1025146=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Converting a list of numbers to use a range operator
in thread [Solved] Converting a list of numbers to use a range operator

> but why does this push @a,"inf" work?

inf and -inf are special numeric constants

DB<159> $a=inf => "inf" DB<160> --$a => "inf" DB<161> ++$a => "inf"

in this case they are handy, because $now+1 == inf won't raise a warning

DB<116> use warnings;5=="inf" => "" DB<117> use warnings;5=="WhatEver" Argument "WhatEver" isn't numeric in numeric eq (==) at (eval 47)[mult +i_perl5db.pl:644] line 2.

> Where is this "inf" documented?

no idea, I scanned the perldocs for X<inf> w/o success.

see also Infinity and Inf?

Cheers Rolf

( addicted to the Perl Programming Language)

UPDATE: deleted wrong example about incrementing inf


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