Fold

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

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Fold is a unimplemented language devised by user:moon.

Instruction set

1. >: Move the memory pointer to the left
2. <: Move the memory pointer to the right
3. &: Start a fold in the direction of the instruction pointer, will end at contacting a seam, anything under the fold is incremented, a fold moves along at one cell per tick
4. *: Creates a seam at the location of the memory pointer
5. $: Creates a loop in the program tape, ends at @, the loop goes in the direction that the program pointer is moving in
6. !: Flips the direction of the memory pointer
7. ?: Skips the next instruction if the value under the memory pointer is not 0
8. ^: Cuts a loop, allowing the execution of the program to continue normally
9. @: Marker for $, doesnt do anything unless linked to a loop, in which it moves the program pointer back to the loop it is linked to
10. .: Patches a seam, if existent, at the location of the memory pointer;
11. :: print the value under the memory pointer
12. (: undoes a fold if the memory pointer is on the start point of a fold
13. ;: Get input and put it under the memory pointer
14. #: Branches the code and the child skips the next instruction
15. ~: Ends execution

Minimal Examples

$>#&@ this is a infinite incrementer, acting like [0,1..] the Haskell equivalent to it

More info later