什么是Ruby的C？：运算符？

Question

C has short conditional branch operator.

int a = 1 < 2 ? 3 : 4;

What's the equivalent in Ruby?

Answer 1

Ruby也有三元运算符，您可以用相同的方式进行操作。

a = 1 < 2 ? 3 : 4

Answer 2

a = true  ? 'a' : 'b' #=> "a"
b = false ? 'a' : 'b' #=> "b"

Answer 3

You can also use a whole if statement since it is also an expression:

a = if 1 < 2 then 3 else 4 end

or even:

a = if 1 < 2
      3
    else
      4
    end