ruby &符号等于

Posted 2021-05-16

a, b = 1, 2

a &= b

# is the same as
a = a & b

# does a bitwise `and`

x = true
# => true
x &= true
# => true
x
# => true
x &= false
# => false
x
# => false
x &= true
# => false
x
# => false