module ArrayCollate

for an example of ArrayCollate see www.jamesrobertson.eu/snippets/2014/jun/08/collating-items-in-an-array.html

Public Instance Methods

collate(pattern=nil) { |x| ... } click to toggle source

# File lib/rowx.rb, line 16
def collate(pattern=nil)
  a = self.inject([[]]) do |r,x|
    if block_given? then  
      yield(x) ? r << [x] : r[-1] << x        
    else
      x =~ pattern ? r << [x] : r[-1] << x
    end # block
    r
  end
  a.shift if a.first.empty?
  a
end