push

• Push item onto place

  • place is a generalized reference to a list

> (setq a (list 1 (list 2 3)))

(1 (2 3))

> (push 'x a )

(x 1 (2 3))

> a

(x 1 (2 3))

> (push 9 (third a))

(9 2 3)

> a

(x 1 (9 2 3))

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