true == true

  
true == false

  
true != false

  
true and false == false

  
true && false == false

  
false || true == true

  
"" == nil

  
nil.nil?

  
!nil

  
!false

  
!!false

  
!!!!!false

  
[1,2,3,4,5][2,1] == [3]

  
[1,2,3,4,5][2,2] == [3,4]

  
"abcd"[1,2] == "bc"

  
"abcd"[1..2] == "bc"

  
"abcd"[-2..-1] == "bc"

  
"abcdefg"[/^abc/].nil?

  
"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]

  
1 == 1 

  
1 > 1

  
2 > 3

  
2 < 1

  
"abc".tr('abc','x') == 'xxx'

  
"x"[/x/].nil?

  
( %\|\ =~ /|/ ) == 0

  
('o/|\o' =~ %r{o/}) > 0

  
%i(a b) == ['a', 'b']

  
%i(()) != [:"()"]

  
%w(a b) == ["a", "b"]

  
%w(a b) * 2 == ["a", "b", "a", "b"]

  
%|x| == %{x}

  
%\|\ == %/|/

  
%|| == ""

  
"o/ " " \o" == "o/  \o"

  
$:.is_a? Array

  
Integer > Numeric

  
Integer < Numeric

  
Time < Object

  
Integer < Float == true

  
true & false

  
true | false

  
false | true

  
false & true

  
0 & 1 == 0

  
1 | 0 == 1

  
1 & 0 == 1

  
1 & 0 == 0

  
1 | 0 == 0

  
Array(a: "a", b: "b") == [[:a, "a"], [:b, "b"]]

  
Array.new(2, true) == [true,true]

  
Array.new(4).length == 4

  
Array.new(4).compact.length == 4

  
"#{"a"}" == '"a"'

  
'#{"a"}' == '"a"'

  
'b'*3 == 'bbbb'

  
"á".bytes.size == 1

  
(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]

  
1e2 == 10

  
1e3 == 100.0