Re^2: Integer detection concept

in reply to Re: Integer detection concept
in thread Integer detection concept

For regular numbers, this is works, but it also claims 'integerness' for things like '2na' and '4ever'. Would a regexp be a reliable way of catching this, or is there something better?

sub is_int
{
        ($_[0] =~ /^\-?\d+(?:\.\d+)?(?:e\+\d+)?$/
        && $_[0] == int $_[0]);
}
[download]

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Re: Integer detection concept by merlyn (Sage) on May 15, 2001 at 00:38 UTC
Maybe something like this: `sub is_int { my $warned = 0; local $SIG{__WARN__} = sub { $warned++ }; local $^W = 1; $_[0] == int $_[0] and not $warned; }` [download] -- Randal L. Schwartz, Perl hacker	[reply] [d/l]

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