Ruby read 2 integers at the same time

Question

I have two integers on a line in STDIN which I would like to read at the same time. I tried pattern matching like this:

[a, b] = gets.split.map(&:to_i)

However, this failed:

solution.rb:7: syntax error, unexpected '=', expecting keyword_end
    [a, b] = gets.split.map(&:to_i)

How can I read two integers from the same line(preferably but not necessarily at the same time)?

Answer 1

You need to remove brackets on the left side:

a, b = gets.split.map(&:to_i)

Answer 2

It's better to be a safe side by using splat operator

a, b, * = gets.split.map(&:to_i)

for more info about splat operator, I've written a blog on Ruby Splat operator