use 5.010;
use Scalar::Util qw(looks_like_number);

sub is_int (_) {
  my $i = shift;
  looks_like_number($i) and int($i)==$i;
}

say for grep { is_int } qw(
    -6
    5.2
    5.0
    3e4
    0Hello
);

[download]

Note that this classes 5.0 as an integer, which is correct from a maths point of view, but not necessarily from a comp sci one.

perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

In reply to Re: Data::Types or grok_number by tobyink
in thread Data::Types or grok_number by tqisjim

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