Ruby x,y = gets.split.map &:to_i -

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i confused line of ruby code. why assignment given x, y , not single variable?

x,y = gets.split.map &:to_i

this assigns first entry array x, , second entry y in contrast assigning single variable in case array assigned variable.

putting multiple variables on left hand side of assignment way of unpacking array separate variables. can try in irb:

irb(main):001:0> numbers = [1, 2, 3] => [1, 2, 3] irb(main):002:0> first, second = numbers => [1, 2, 3] irb(main):003:0> first => 1 irb(main):004:0> second => 2

check out this answer older question wrote gives more details , example of can useful.


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