Re^2: Converting a list of numbers to use a range operator

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Re^3: Converting a list of numbers to use a range operator by LanX (Saint) on Mar 24, 2013 at 14:18 UTC
> 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	[reply] [d/l] [select]

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Re^3: Converting a list of numbers to use a range operator
by LanX (Saint) on Mar 24, 2013 at 14:18 UTC

> 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.