C:\test>perl -E "my $foo='abc def';my @foo=split m/ /,$foo; for (@foo) {say $_}"
abc
def

##</code><code>##

C:\test>perl -E "my $foo='abc def';my @foo=split m/ /,$foo; for (@foo) {say}"
abc
def

##</code><code>##

C:\test>perl -E "my $foo='abc def';my @foo=split m/ /,$foo; say for @foo"
abc
def

##</code><code>##

C:\test>perl -E "my @foo=split m/ /,'abc def'; say for @foo"
abc
def

##</code><code>##

C:\test>perl -E "say for split m/ /,'abc def'"
abc
def