array-access.rb

start = Time.now

# 0.000
=begin
  %x{
    var a = 0;
    var b = 10000;
    var x = [0, 1, 2, 3];

    while (a < b) {
      if (x[a % 4] != a % 4) {
        #{fail};
      }

      a += 1;
    }
  }
=end

# 0.041
=begin
  a = 0
  b = 10_000
  x = [0, 1, 2, 3]

  %x{
    while (a < b) {
      if (#{x[`a % 4`]} != a % 4) {
        #{fail};
      }

      a += 1;
    }
  }
=end

# 0.041
=begin
  class Foo < Array; end

  a = 0
  b = 10_000
  x = Foo[0, 1, 2, 3]

  %x{
    while (a < b) {
      if (#{x[`a % 4`]} != a % 4) {
        #{fail};
      }

      a += 1;
    }
  }
=end

# 0.190
# 0.000 (MRI)
=begin
  a = 0
  b = 10_000
  x = [0, 1, 2, 3]

  while a < b
    unless x[a % 4] == a % 4
      fail
    end

    a += 1
  end
=end

# 0.210
# 0.001 (MRI)
=begin
  class Foo < Array; end

  a = 0
  b = 10_000
  x = Foo[0, 1, 2, 3]

  while a < b
    unless x[a % 4] == a % 4
      fail
    end

    a += 1
  end
=end

stop = Time.now

puts stop - start