Class: BodyMassIndex

Inherits:

Object

• Object
• BodyMassIndex

Defined in:

lib/body_mass_index.rb

Instance Attribute Summary

• #height ⇒ Object readonly

  Returns the value of attribute height.

• #mass ⇒ Object readonly

  Returns the value of attribute mass.

Instance Method Summary

• #calculate_index ⇒ Object
• #initialize(height, mass) ⇒ BodyMassIndex constructor

  A new instance of BodyMassIndex.

Constructor Details

#initialize(height, mass) ⇒ BodyMassIndex

# File 'lib/body_mass_index.rb', line 4

def initialize(height, mass)
  @height, @mass = height, mass
end

Instance Attribute Details

#height ⇒ Object (readonly)

Returns the value of attribute height.

# File 'lib/body_mass_index.rb', line 2

def height
  @height
end

#mass ⇒ Object (readonly)

Returns the value of attribute mass.

# File 'lib/body_mass_index.rb', line 2

def mass
  @mass
end

Instance Method Details

#calculate_index ⇒ Object

# File 'lib/body_mass_index.rb', line 8

def calculate_index
  (mass / (height ** 2)).round(2)
end