Sha256: 9ba100c5c8bdcc59159c442565afd759336af83af04269f177d1af13da98f8b1
Contents?: true
Size: 1021 Bytes
Versions: 7
Compression:
Stored size: 1021 Bytes
Contents
require 'darkext/numeric'
require 'darkext/symbol'
class Array
# Rotates the array left by n elements
def rotate(n = 1)
return if self.size.zero?
n.times { self.push(self.shift) }
end
# Rotates the array right by n elements
def rotate_reverse(n = 1)
return if self.size.zero?
n.times { self.unshift(self.pop) }
end
# Sums the array
def sum
self.inject(:+)
end
# Finds the product of the array
def product
self.inject(:*)
end
# Collects the squares of each value in the array
def squares
self.map(&:square)
end
# Destructively collects the squares
def squares!
self.map!(&:square)
end
# Finds the sum of squares of the array
def sum_of_squares
self.squares.sum
end
# Picks a random value from the array
def random
self[rand(self.size)]
end
alias :pick :random
# Randomizes the array
def randomize
self.sort_by { rand }
end
# Destructively randomizes
def randomize!
self.replace(self.randomize)
end
end
Version data entries
7 entries across 7 versions & 1 rubygems