User:PkmnQ/qoob derivatives

This is still a work in progress. It may be changed in the future.

This page details some qoob derivatives.

Dequeue (-)

An additional construct can be defined as follows:

• - Dequeue a value and discard it

With this, the dequeuing aspect of [] becomes less useful, so these variations can be considered:

[] still dequeues

Any mention of "qoob + -" should be assumed to refer to this unless specified otherwise.

This variation can be compiled into regular qoob using the following substitutions:

qoob + -	qoob
0	0
1	10
-	[]
[	[[]
]	]

[] peeks

Regular qoob is easily compiled into this variation by replacing [...] with [-...].

In the other direction, this variation can be compiled into regular qoob using the following substitutions:

qoob + - variation	qoob
0	100
1	1010
-	[][]
[	[]0[[]1010[[]10[1]0]
]	[]0]100[[]10[1]0]

This requires dequeuing and re-enqueuing the entire queue every loop iteration. A more efficient compilation may be possible.

Roll (=) and invert (*)

Two more constructs can be defined as follows:

• = Dequeue a value from the front of the queue and enqueue the same value at the back
• * Dequeue a value from the front of the queue and enqueue the opposite value at the back

This variation can be compiled into regular qoob using the following substitutions:

qoob + = + *	qoob
0	010
1	100
=	[1]0[1]0
*	[0]1[0]0
[	[[][]
]	][]

0, *, [] subset

This section is still a work in progress. It may be changed in the future.

1, *, [] subset

This section is still a work in progress. It may be changed in the future.

Duplicate (:)

This section is still a work in progress. It may be changed in the future.