1_8_7_Output.sh

$ /usr/bin/ruby -v a.rb
ruby 1.8.7 (2010-01-10 patchlevel 249) [universal-darwin11.0]
Arguments received by method:
arg_1: [1, 2, 3]
arg_2: []

Arguments received by lambda:
arg_1: [1, 2, 3]
arg_2: []

Arguments received by proc:
arg_1: [1, 2, 3]
arg_2: []

Arguments received by class_exec:
arg_1: [1, 2, 3]
arg_2: []

Arguments received by instance_exec:
arg_1: [1, 2, 3]
arg_2: []

1_9_Output.sh

$ ~/src/ruby.git/.prefix/bin/ruby -v a.rb
ruby 2.0.0dev (2012-03-10 trunk 34964) [x86_64-darwin11.3.0]
Arguments received by method:
arg_1: [1, 2, 3]
arg_2: []

Arguments received by lambda:
arg_1: [1, 2, 3]
arg_2: []

Arguments received by proc:
arg_1: 1
arg_2: [2, 3]

Arguments received by class_exec:
arg_1: 1
arg_2: [2, 3]

Arguments received by instance_exec:
arg_1: 1
arg_2: [2, 3]

splat_args.rb

def foo(arg_1, *arg_2)
  puts "Arguments received by method:"
  puts "arg_1: #{arg_1.inspect}"
  puts "arg_2: #{arg_2.inspect}"
end
foo([1, 2, 3])

puts

(lambda do |arg_1, *arg_2|
  puts "Arguments received by lambda:"
  puts "arg_1: #{arg_1.inspect}"
  puts "arg_2: #{arg_2.inspect}"
end)[[1, 2, 3]]

puts

(proc do |arg_1, *arg_2|
  puts "Arguments received by proc:"
  puts "arg_1: #{arg_1.inspect}"
  puts "arg_2: #{arg_2.inspect}"
end)[[1, 2, 3]]

puts

Class.class_exec([1, 2, 3]) do |arg_1, *arg_2|
  puts "Arguments received by class_exec:"
  puts "arg_1: #{arg_1.inspect}"
  puts "arg_2: #{arg_2.inspect}"
end

puts

instance_exec([1, 2, 3]) do |arg_1, *arg_2|
  puts "Arguments received by instance_exec:"
  puts "arg_1: #{arg_1.inspect}"
  puts "arg_2: #{arg_2.inspect}"
end