On Jul 23, Mads N. Vestergaard said:
I'm trying to check weather a variable is an integer, i have tried the
following:
use Math::BigRat;
my $x = 42;
print "$x is an integer\n" if $x->is_int();
Using Math::BigRat doesn't automatically make numbers into objects. You'd
have to say
my $x = Math::BigRat->new(42);
in order to call the is_int() method. But there's no need to go through
those hoops.
Depending on what your definition of an integer is, you can probably just
do:
if ($x eq int($x)) {
# it's an integer
}
This will fail if $x is something like '00' or '1e0'.
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