Class: Fixnum

Inherits:
Object show all
Defined in:
lib/sixarm_ruby_ramp/fixnum.rb

Overview

Fixnum extensions

Instance Method Summary collapse

Instance Method Details

#even? ⇒ Boolean

From blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/4516

Examples:

2.even? => true
3.even? => false

Returns:

  • (Boolean) —

    true if the number is even



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# File 'lib/sixarm_ruby_ramp/fixnum.rb', line 16

def even?
  return self & 1 == 0
end

#odd? ⇒ Boolean

From blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-core/4516

Examples:

2.odd? => false
3.odd? => true

Returns:

  • (Boolean) —

    true if the number is odd



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# File 'lib/sixarm_ruby_ramp/fixnum.rb', line 29

def odd?
  return self & 1 != 0
end