Web Reference: Dec 6, 2019 · Array#length () : length () is a Array class method which returns the number of elements in the array. Syntax: Array.length () Parameter: Array Return: the number of elements in the array. The length of the returned array is the product of the length of self and the argument arrays. If given a block, product will yield all combinations and return self instead. For example, Array#size is explicitly defined as an alias for Array#length. As a result, this creates a copy of the original method name as #size, so you should be able to redefine the aliased version without changing the behavior of the original #length method.
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