Range iterator outside integer range

Infinity is a float, and the range operator requires an integer. Both of the following would get you the max int: 

use constant MAX_INT => unpack('J', pack('j', -1));
use constant MAX_INT => 0+sprintf('%u', -1);

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You could also use a C-style loop: 

for (my $_ = 1; ; ++$_)

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I tried to define a lazy iteration and I know that I can redefine the constant for my needs

It's not a symbol (i.e., not a constant, a sub or a builtin). 

$ perl -e'Inf()'
Undefined subroutine &main::Inf called at -e line 1.

$ perl -Mstrict -e'Inf'
Bareword "Inf" not allowed while "strict subs" in use at -e line 1.
Execution of -e aborted due to compilation errors.

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It's just a string that some underlying C libraries numify to a value representing infinity.

It seems to be a feature of Math::BigInt

It's an feature of the hardware floating point number format. Math::Big* may also support it, but that's unrelated.

In reply to Re: Infinity and Inf? by ikegami
in thread Infinity and Inf? by LanX

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