johngg@abouriou:~$ perl -Mstrict -Mwarnings -E '
say for map { $_ % 2 != 0 } 0 .. 10;'

1

1

1

1

1


##</code><code>##

johngg@abouriou:~$ perl -Mstrict -Mwarnings -E '
say for grep { $_ % 2 != 0 } 0 .. 10;'
1
3
5
7
9

##</code><code>##

johngg@abouriou:~$ perl -Mstrict -Mwarnings -E '
say for grep { $_ % 2 } 0 .. 10;'
1
3
5
7
9