Maybe I am missing something but never seen that in practice (the 'foo(1, $c=20)' bit), that's a really odd way to initialize a variable. Wouldn't mind if they

Maybe I am missing something but never seen that in practice (the 'foo(1, $c=20)' bit), that's a really odd way to initialize a variable. Wouldn't mind if they change it, so that it breaks (with a warning or error). Or have you seen this syntax a lot?