sapphire-lang 0.7.0

Gradually typed scripting language where every value is an object and types are optional, checked at runtime
Documentation 
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# Num is the common superclass of Int and Float.
# It provides numeric helper methods shared by both types.
#
class Num {
  # Returns true if the value is zero.
  #
  #   0.zero?()    # true
  #   1.zero?()    # false
  #   0.0.zero?()  # true
  #

  def zero?() { self == 0 }

  # Returns true if the value is greater than zero.
  #
  #   1.positive?()    # true
  #   0.positive?()    # false
  #   (-1).positive?() # false
  #

  def positive?() { self > 0 }

  # Returns true if the value is less than zero.
  #
  #   (-1).negative?() # true
  #   0.negative?()    # false
  #   1.negative?()    # false
  #

  def negative?() { self < 0 }

  # Returns the absolute value.
  #
  #   (-5).abs  # 5
  #   5.abs     # 5
  #   (-2.5).abs # 2.5
  #

  def abs { if self < 0 { -self } else { self } }

  # Returns the value clamped between min and max.
  # If the value is less than min, returns min.
  # If the value is greater than max, returns max.
  # Otherwise returns the value unchanged.
  #
  #   10.clamp(1, 5)  # 5
  #   0.clamp(1, 5)   # 1
  #   3.clamp(1, 5)   # 3
  #

  def clamp(min, max) { if self < min { min } elsif self > max { max } else { self } }
}