Warning while using ternary operator

[simonz]

Hi,
I am getting a warning while executing the following code in case where I am not using any variable for the ternary operator. Why I am getting warning like "Useless use of a constant in void context at a.pl" for not using the variable ? How can I write the code without using the variable and not getting the warning as well.

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" : 'nothin
+g';


# Below line giving warning. But I want this 

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