Method: Enumerable#count

Defined in:
enum.c

#count ⇒ Integer #count(item) ⇒ Integer #count {|obj| ... } ⇒ Integer

Returns the number of items in enum, where #size is called if it responds to it, otherwise the items are counted through enumeration. If an argument is given, counts the number of items in enum, for which equals to item. If a block is given, counts the number of elements yielding a true value.

ary = [1, 2, 4, 2]
ary.count             # => 4
ary.count(2)          # => 2
ary.count{|x|x%2==0}  # => 3

Overloads:



172
173
174
 
# File 'enum.c', line 172

static VALUE
enum_count(argc, argv, obj)
int argc;