instance method

Array#at

(::int index) -> Elem

at(index) → object or nil

VALUE
rb_ary_at(VALUE ary, VALUE pos)
{
    return rb_ary_entry(ary, NUM2LONG(pos));
}

Returns the element of self specified by the given index or nil if there is no such element; index must be an integer-convertible object.

For non-negative index, returns the element of self at offset index:

Example

a = [:foo, 'bar', 2]
a.at(0)   # => :foo
a.at(2)   # => 2
a.at(2.0) # => 2

For negative index, counts backwards from the end of self:

Example

a.at(-2) # => "bar"

See also #assoc #bsearch #append #bsearch_index also in 4.1 · 3.4 · 3.3 · 3.2 · 3.1 · 3.0