> 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"

[download]

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.

[download]

> 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

In reply to Re^3: Converting a list of numbers to use a range operator by LanX
in thread [Solved] Converting a list of numbers to use a range operator by FloydATC

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