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Contents
require 'facets/hash/count'
module Enumerable
# Count the number of items in an enumerable equal (==)
# to the given object(s).
#
# e = [ 'a', 1, 'a' ]
#
# e.count(1) #=> 1
# e.count('a') #=> 2
#
# The method can count more than one item by supplying additional
# arguments.
#
# e.count('a', 1) #=> 3
#
# A block may also be used to select countable entries.
#
# e.count{ |x| String === x } #=> 2
#
# Note that Hash#count only considers values.
#
# e = { 'a' => 2, 'x' => 2, 'b' => 1 }
#
# e.count(1) #=> 1
# e.count(2) #=> 2
#
# NOTE: This is one of the few method overrides in Facets.
#
# CREDIT: Trans
def count(*items, &block)
if block || !items.empty?
r = self
r = r.select(&block) if block
r = r.select{ |x| items.any?{ |i| i == x } } if !items.empty?
r.size
else
begin
size
rescue
i=0; each{ |e| i+=1 }; i
end
end
end
end
class Array
remove_method(:count) rescue nil
end
Version data entries
7 entries across 6 versions & 1 rubygems