Module: UtilityPack::CoreExtensions::Array
- Included in:
- Array
- Defined in:
- lib/utility_pack/core_ext/array.rb
Instance Method Summary collapse
-
#random(count = 1) ⇒ Object
returns a random element from the array if count is specified, a array of unique random elements is returned.
Instance Method Details
#random(count = 1) ⇒ Object
returns a random element from the array if count is specified, a array of unique random elements is returned
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# File 'lib/utility_pack/core_ext/array.rb', line 7 def random(count = 1) raise "Invalid argument (count must be >1)" if count < 1 if count == 1 self[rand(self.size)] else raise "Invalid argument. The size of the array is #{self.size} and \ you are requesting #{count} random elements" if count > self.size r = [] while r.size != count tmp = self[rand(self.size)] r << tmp unless r.include?(tmp) end if count == 1 r = r[0] end r end end |