Why can't I use "or" here?

[botp]

I know Perl, but I'm still surprised.

# perl -le 'print undef or 4'

# perl -le 'print(undef or 4)'
4

do not be surprise, ruby opted for the former case since it is more
common, and therefore has relegated the "or/and" ops w very low
precedence level (and ergo different fr their sibling ops "||/&&")

in other words, if you see a method like
1
2
=> 4

it actually means
1
2
=> 4

and if you write a statement like

ruby will err for you
but friendly enough to allow you to by (re)emphasizing...

so maybe you meant


best regards
-botp