ary.count â int
ary.count(obj) â int
ary.count { |item| block } â int
ary.count(obj) â int
ary.count { |item| block } â int
Instance Public methods
Returns the number of elements.
If an argument is given, counts the number of elements which equal
obj using ===.
If a block is given, counts the number of elements for which the block returns a true value.
1 2 3 4 | ary = [1, 2, 4, 2]ary.count #=> 4ary.count(2) #=> 2ary.count { |x| x%2 == 0 } #=> 3 |
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