Class: MathWild

Inherits:
Object
  • Object
show all
Defined in:
lib/math_wild.rb

Overview

collection of Aritmethic dunctions

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ MathWild

class aux functions



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# File 'lib/math_wild.rb', line 6

def initialize
  self
end

Class Method Details

.arr_number?(args) ⇒ Boolean

verify if an array only has numbers

Returns:

  • (Boolean) 


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# File 'lib/math_wild.rb', line 23

def arr_number?(args)
  args.each do |arg|
    return false unless number?(arg)
  end
  true
end

.dev(*args) ⇒ Object

to devide todo: improve it



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# File 'lib/math_wild.rb', line 103

def dev(*args)
  result = args.first
  args[1..].each do |element|
    return 0 unless number?(element) && element != 0
    result /= element
  end
  result
end

.dev_arr(args) ⇒ Object 



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# File 'lib/math_wild.rb', line 111

def dev_arr(args)
  return 0 unless arr_number?(args)

  result = args.first
  args[1..].each do |element|
    return 0 unless number?(element) && element != 0
    result /= element
  end
  result
end

.force_sub(*args) ⇒ Object 



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# File 'lib/math_wild.rb', line 141

def force_sub(*args)
  if args.first.is_a?(Array)
    result = sub_arr(args.first)
  else
    result = to_num(args.first)
  end
  args[1..].each do |element|
    if element.is_a?(Array)
      element = sum_arr(element)
    else
      element = to_num(element)
      return 0 unless number?(element)
    end
    result -= element
  end
  result
end

.force_sum(*args) ⇒ Object

forced sum try to sum even with an string or array and ignore if is not possible to convert



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# File 'lib/math_wild.rb', line 127

def force_sum(*args)
  result = 0
  args.each do |element|
    if element.is_a?(Array)
      element = sum_arr(element)
    else
      element = to_num(element)
      return 0 unless number?(element)
    end
    result += element
  end
  result
end

.mul(*args) ⇒ Object

to multiply



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# File 'lib/math_wild.rb', line 79

def mul(*args)
  result = args.first
  args[1..].each do |element|
    return 0 unless number?(element)

    result *= element
  end
  result
end

.mul_arr(args) ⇒ Object 



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# File 'lib/math_wild.rb', line 89

def mul_arr(args)
  return 0 unless arr_number?(args)

  result = args.first
  args[1..].each do |element|
    return 0 unless number? element

    result *= element
  end
  result
end

.number?(arg) ⇒ Boolean

verify if an argument is a number return true if is a number or false if not

Returns:

  • (Boolean) 


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# File 'lib/math_wild.rb', line 18

def number?(arg)
  arg.is_a?(Integer) || arg.is_a?(Float)
end

.sub(*args) ⇒ Object

to subtract



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# File 'lib/math_wild.rb', line 56

def sub(*args)
  result = args.first
  args[1..].each do |element|
    return 0 unless number?(element)

    result -= element
  end
  result
end

.sub_arr(args) ⇒ Object 



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# File 'lib/math_wild.rb', line 66

def sub_arr(args)
  return 0 unless arr_number?(args)

  result = args.first
  args[1..].each do |element|
    return 0 unless number? element

    result -= element
  end
  result
end

.sum(*args) ⇒ Object

sum simple sum function



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# File 'lib/math_wild.rb', line 32

def sum(*args)
  result = 0
  args.each do |element|
    return 0 unless number?(element)

    result += element
  end
  result
end

.sum_arr(args) ⇒ Object

to sum a array of numbers



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# File 'lib/math_wild.rb', line 43

def sum_arr(args)
  return 0 unless arr_number?(args)

  result = 0
  args.each do |element|
    return 0 unless number? element

    result += element
  end
  result
end

.to_num(arg) ⇒ Object

covert string into a number



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# File 'lib/math_wild.rb', line 12

def to_num(arg)
  return arg.to_f if arg.to_f.is_a?(Float)
end