my $hash = {};
my $i = "one";

#Below line giving no warning. But I DO NOT want this

#my $val = ($i eq 'one') ? $hash->{'name'} = "hello"."world" : 'nothing';


# Below line giving warning. But I want this 

($i eq 'one') ? $hash->{'name'} = "hello"."world" : 'nothing';