OCB

The title of this article is not correct because of technical limitations. The correct title is actually []\.

[]\ is a 3-instruction joke esolang I designed which relies on loops to do anything remotely complicated. Each command has one operand; [ and ] have numerical operands, whereas \ has a + or - operand.

Commands

Instruction	Meaning
[x	Start a while-not-x loop.
]x	End a while-not-x loop.
\+	Increment the memory cell. (And \- decrements.)

Also, when a blank line or linebreak appears (depends on the mode), it has a memory leak and outputs the memory cell as ASCII. Everything is done mod 256.

Example programs

Hello world program

>> mode 1 (linebreak)
[72\+]72
[101\+]101
[108\+]108

[111\+]111
[44\+]44
[32\+]32
[119\+]119
[111\+]111
[114\+]114
[108\+]108
[100\+]100
[33\+]33

Looping counter (ASCII mode) (???)

>> mode 1 (linebreak)
\+
[0
\+]0      $> note: only works from 1-255, then it hits 256 which is 0 so the loop ends.