[1,2,3,4,5][2,2] == [3,4]
"abcdefgh"[/defghij/].nil?
[1,[2,[3,[4],-3],-2],-1][1][1][1] == [4]
"@jonatasdp"[/@(.*)/,1] == 'jonatasdp'
"x@y.z"[/(.*)@(.*)/,2] == 'y.z'
(2..3).to_a - (2..3).to_a == [3]
"abc".tr('abc','x') == 'xxx'
%w(a b) * 2 == ["a", "b", "a", "b"]
Array(a: "a", b: "b") == [[:a, "a"], [:b, "b"]]
Array.new(2, true) == [true,true]
Array.new(4).compact.length == 4
(1..5).to_a
.select {|e| e % 2 == 0}
.send :==, [2, 4]
(1..5).to_a
.select {|e| e % 2 == 0}
.map {|e| e * e / 4}
.reverse
.send :==, [1, 4]