Question

I need help for understanding – What is the difference between Equal to and Comparison?

Here is the case

    x == y means `Equal to`

    x = 10 and y = 10

    puts "X and Y are equal" if x == y

    puts "X and Y are equal" if x <=> y

I know when and where can I use equal to, but when and where can I use Comparison <=>

Thanks

Answer 1

When you want to compare? It returns -1, 0, 1. For example, sorting users by first name:

users_by_first = users.sort { |u1, u2| u1.fname <=> u2.fname }

Here’s another SO question asking about the spaceship operator.