foo.bar %{baz} a.b(c, d) a.b() foo .bar &.baz a! a.() a.(1, 2, 3) a::b a::b c foo.bar = 1 a? a(&block) a(**kwargs) a.b.c a(b, c) a() a(*args) a b, c a.b c, d foo.foo, bar.bar = 1, 2 a&.b a&.() a&.b(c) a&.b() foo :a, :b if bar? or baz and qux foo(:a, :b ) foo(*rest) foo(:a, :h => [:x, :y], :a => :b, &:bar) hi 123, { :there => :friend, **{}, whatup: :dog } foo :a, b: true do |a, b| puts a end hi there: :friend hi :there => :friend, **{}, whatup: :dog hi(:there => :friend, **{}, whatup: :dog) foo({ a: true, b: false, }, &:block) hi :there => :friend foo(:a, :b, ) foo( :a, b: :c, ) foo &:block foo a: true, b: false, &:block some_func 1, kwarg: 2 Kernel.Integer(10) x.each { } foo.map { $& } A::B::C :foo A::B::C(:foo) A::B::C(:foo) { } foo("a": -1) foo bar: { baz: qux do end } foo bar: { **kw do end } foo "#{bar.map do "baz" end}" do end foo class Bar baz do end end foo module Bar baz do end end foo [baz do end] p begin 1.times do 1 end end foo :a, if x bar do |a| a end end foo :a, while x bar do |a| a end end, until x baz do end end {} + A {} {} + A { |a| a } A {} + A {} lst << A {} "#{ join (" ") }" "#{(v)}" def f(*); p *; end