Re^2: Check for Positive Integer entry only

Close. I think ($_ eq int($_) && $_ > 0) will work as a condition though.

use strict;
use warnings;

my @tests = qw/12 1a 4 -3 0 0.1 .1/;

for (@tests) {
    print "$_ => ";
    no warnings qw/numeric/;
    if ($_ eq int($_) && $_ > 0) {
        print 'ok';
    } else {
        print 'bad';
    }
    print "\n";
}


__END__
C:\Perl\test>perl int_test.pl
12 => ok
1a => bad
4 => ok
-3 => bad
0 => bad
0.1 => bad
.1 => bad
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___________
Eric Hodges

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Re^3: Check for Positive Integer entry only by kyle (Abbot) on May 09, 2007 at 21:59 UTC
use strict; use warnings; use Test::More; my @good = qw( 12 1 +1 1234 ); my @bad = qw( 1a -3 0.1 .1 0 +0 -0 ); plan 'tests' => scalar @good + scalar @bad; ok( is_int( $_ ), "[$_] is int" ) for @good; ok( ! is_int( $_ ), "[$_] is not int" ) for @bad; sub is_int { return ( $_[0] eq int( $_[0] ) && $_[0] > 0 ); } __END__ 1..11 ok 1 - [12] is int ok 2 - [1] is int not ok 3 - [+1] is int # Failed test '[+1] is int' # in perlmonks.pl at line 14. ok 4 - [1234] is int Argument "1a" isn't numeric in int at perlmonks.pl line 18. ok 5 - [1a] is not int ok 6 - [-3] is not int ok 7 - [0.1] is not int ok 8 - [.1] is not int ok 9 - [0] is not int ok 10 - [+0] is not int ok 11 - [-0] is not int # Looks like you failed 1 test of 11. [download] Oops. I should have named that `is_positive_int`, etc.	[reply] [d/l] [select]

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Re^3: Check for Positive Integer entry only
by kyle (Abbot) on May 09, 2007 at 21:59 UTC

use strict;
use warnings;

use Test::More;

my @good = qw( 12 1 +1 1234 );
my @bad  = qw( 1a -3 0.1 .1 0 +0 -0 );

plan 'tests' => scalar @good + scalar @bad;
ok(   is_int( $_ ), "[$_] is int" )     for @good;
ok( ! is_int( $_ ), "[$_] is not int" ) for @bad;

sub is_int {
    return ( $_[0] eq int( $_[0] ) && $_[0] > 0 );
}
__END__
1..11
ok 1 - [12] is int
ok 2 - [1] is int
not ok 3 - [+1] is int
#   Failed test '[+1] is int'
#   in perlmonks.pl at line 14.
ok 4 - [1234] is int
Argument "1a" isn't numeric in int at perlmonks.pl line 18.
ok 5 - [1a] is not int
ok 6 - [-3] is not int
ok 7 - [0.1] is not int
ok 8 - [.1] is not int
ok 9 - [0] is not int
ok 10 - [+0] is not int
ok 11 - [-0] is not int
# Looks like you failed 1 test of 11.
[download]

Oops. I should have named that is_positive_int, etc.

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