Class: Array

Inherits:
Object show all
Defined in:
lib/rbot/core/utils/extends.rb

Overview

Extensions to the Array class

Direct Known Subclasses

ArrayOf

Instance Method Summary collapse

Instance Method Details

#delete_one(val = nil) ⇒ Object

This method returns a given element from the array, deleting it from the array itself. The method returns nil if the element couldn’t be found.

If nil is specified, a random element is returned and deleted.



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# File 'lib/rbot/core/utils/extends.rb', line 100

def delete_one(val=nil)
  return nil if self.empty?
  if val.nil?
    index = rand(self.length)
  else
    index = self.index(val)
    return nil unless index
  end
  self.delete_at(index)
end

#pick_one ⇒ Object

This method returns a random element from the array, or nil if the array is empty



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# File 'lib/rbot/core/utils/extends.rb', line 90

def pick_one
  return nil if self.empty?
  self[rand(self.length)]
end

#shuffle ⇒ Object 



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# File 'lib/rbot/core/utils/extends.rb', line 116

def shuffle
  sort_by { rand }
end

#shuffle! ⇒ Object 



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# File 'lib/rbot/core/utils/extends.rb', line 123

def shuffle!
  replace shuffle
end