16 lines
218 B
Ruby
16 lines
218 B
Ruby
unless Array.respond_to?(:average)
|
|
class Array
|
|
def average
|
|
inject(:+) / length unless blank?
|
|
end
|
|
end
|
|
end
|
|
|
|
unless Array.respond_to?(:to_h)
|
|
class Array
|
|
def to_h
|
|
Hash[self]
|
|
end
|
|
end
|
|
end
|