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instance method

Array#length

() -> ::Integer

length → integer

static VALUE
rb_ary_length(VALUE ary)
{
    rb_len_t len = RARRAY_LEN(ary);
    return LEN2NUM(len);
}

Returns the count of elements in self:

Example

[0, 1, 2].length # => 3
[].length        # => 0

See also #last #map #keep_if #map! also in 4.0 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0