wsad

This esolang is a brainfuck derivative.

wsad (say /wˈsæd/) is a brainfuck derivative, that uses only 4 characters.

Commands

Every command consists of two characters in w, s, a, d, for example: wa is equivalent to the [ command in brainfuck.

It is case insensitive.

First character\Second character	w	s	a	d
w	brainfuck +	brainfuck -	brainfuck [	brainfuck ]
s	brainfuck ,	brainfuck .	brainfuck <	brainfuck >
a	Input an integer and store it in current cell	Output current cell as integer	If current cell is not 0, jump to the matching ad	If current cell is 0, jump to the matching aa
d	Halt	Set current cell to random integer in 0-255	Break a loop (by aa and ad or wa and wd)	Jump to the start of program

Examples

Truth Machine

awaswaaswd

Cat program (never terminates)

swssdd

Hello World

It is just translated from brainfuck.

wwwwwwwwwwwwwwwwwasdwwwwwwwwwasdwwwwsdwwwwwwsdwwwwwwsdwwsasasasawswdsdwwsdwwsdwssdsdwwwasawdsawswdsdsdsssdwswswssswwwwwwwwwwwwwwsssswwwwwwsssdsdsssawssssasswwwwwwsswswswswswswssswswswswswswswswssssdsdwwsssdwwwwss

XKCD Random Number

wwwwwwwwas

Random uppercase letter

It is just translated from Random Brainfuck.

sddssdsdwwwwwwwwwwwasawwwwwwwwwwsdwswdsawwsawasdwssdwwsawasdwdsdwasawwsdwswdsasawasawdsdwswdsdsdsdwwwwwwwwwwwwwwwwwasawwwwwwwwwwwwwwwwsdwswdsawwss

Infinite loop

aaad

or simply:

dd

Turing completeness

Since it has all the commands in brainfuck, wsad is Turing complete.

Interpreter

• Official interpreter in C++, an error (an unmatched bracket, using a break outside a loop, accessing cells outside the tape) is not ckecked, so it causes undefined behavior, use ! to separate program and input