Ok, this is one the answer given by most revered tlm to me the other day:
sub test_ordered {
my ( $ref, $test ) = @_;
# $i scans the indices of @$ref;
# $matched keeps count of # of elements matched in @$test;
my ( $i, $matched ) = ( 0, 0 );
OUTER: for ( @$test ) {
while ( $i < @$ref or return 0 ) {
if ( $ref->[ $i++ ] eq $_ ) {
last OUTER if ++$matched == @$test;
last;
}
}
}
return 1;
}
More can be found here. Don't vote my root posting but vote those remarkable answers you will find there.
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