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Size: 938 Bytes
Versions: 16
Compression:
Stored size: 938 Bytes
Contents
module Enumerable
# Count the number of items in an enuerable equal (==)
# to the given object.
#
# e = [ 'a', '1', 'a' ]
# e.count('1') #=> 1
# e.count('a') #=> 2
#
# Count can also handle multiple-valued blocks.
#
# e = { 'a' => 2, 'a' => 2, 'b' => 1 }
# e.count('a',2) #=> 1
#
def count(*c)
self.select{ |*i| i == c }.length
end
end
# _____ _
# |_ _|__ ___| |_
# | |/ _ \/ __| __|
# | | __/\__ \ |_
# |_|\___||___/\__|
#
=begin test
require 'test/unit'
class TC01 < Test::Unit::TestCase
def test_001
e = [ 'a', '1', 'a' ]
assert_equal( 1, e.count('1') )
assert_equal( 2, e.count('a') )
end
def test_002
e = [ ['a',2], ['a',2], ['a',2], ['b',1] ]
assert_equal( 3, e.count(['a',2]) )
end
def test_003
e = { 'a' => 2, 'a' => 2, 'b' => 1 }
assert_equal( 1, e.count('a',2) )
end
end
=end
Version data entries
16 entries across 16 versions & 1 rubygems