Ruby equivalent of Groovy's Elvis (?:) operator?

Question

I know I can live without it, but the question's been bugging me.

Is there a Ruby idiom that's equivalent to Groovy's Elvis operator (?:)?

Essentially, I want to be able to shorten this

PARAM = ARGV[0] ? ARGV[0] : 'default'

Or equivalently

PARAM = 'default' unless PARAM = ARGV[0]

Into something like this

PARAM = ARGV[0] ?: 'default'

Answer 1

Never mind :-) I just found the answer myself after finding out the name of the operator.

From here:

PARAM = ARGV[0] || 'default'

(Must be 'cause I'm juggling 4 languages right now so I forgot I could do that in the first place.)

Answer 2

Possible since Ruby 2.3.

dog&.owner&.phone

Answer 3

Isn't PARAM = ARGV[0] ? ARGV[0] : 'default' the same as PARAM = (ARGV[0] || 'default') ?