Create a ring buffer

ring  list (array)

Create a new immutable ring buffer from args. Indexes wrap around positively and negatively

Introduced in v2.2

Examples

# Example 1 

(ring 1, 2, 3)[0]





#=> 1

# Example 2 

(ring 1, 2, 3)[1]





#=> 2

# Example 3 

(ring 1, 2, 3)[3]





#=> 1

# Example 4 

(ring 1, 2, 3)[-1]





#=> 3