Reversable

Reversable is an esoteric programming language created by User:Dulph on April 1st, 2026. It is extremely similar to REVERSE and most of the commands are the same. However, it doesn't support floating point numbers. It was used as a base for 2D-Reversable and 2D-Reversable 2.

Syntax

Commands

All instructions should be on the same line, separated by a unique space. Program ends itself upon reaching end of the line in one direction or the other. Note : whenever an undefined variable is called, its value is initialized to 0 (if integer) or an empty string (if string).

Instruction	Desc
NOP	Does nothing
SKIP	Skips next instruction
REVERSE	Reverses the read direction
REVERSE<IA	Reverses the read direction if IA > 0 (IA being of type integer)
REVERSE<SA	Reverses the read direction if SA is not an empty string (SA being of type empty string)
GET-PX	Asks for input and stores it in var PX as P type
OUT-PX	Prints the value of var PX
IA+IB	Sets IA to IA + IB
IA-IB	Sets IA to IA - IB
IA*IB	Sets IA to IA * IB
IA%IB	Sets IA to the remainder of IA divided by IB

Variable types

Only 2 variable types are supported by Reversable :

• Integers, named with prefix I
• Caracters, named with prefix S

Examples

Cat

 SKIP REVERSE GET-SA SKIP OUT-SA REVERSE<SA

Implementations

• Python Implementation : Original implementation by User:Dulph