Ruby On Rails اسئلة واجوبة المقابلات

Question: What is the difference between �&&�, �AND� and �&� operators?

The �&&� and �and� are both logical and statements. They �&&� operator has higher precedence though. Here�s an example of illustrate this in more detail:

foo = 3
bar = nil
a = foo and bar
# => nil
a
# => 3
a = foo && bar
# => nil
a
# => nil