We are currently working on new rules for what content should and shouldn't be allowed on this website, and are looking for feedback! See Esolang:2026 topicality proposal to view and give feedback on the current draft.
Bracket
Jump to navigation
Jump to search
- The title of this article is not correct because of technical limitations. The correct title is actually [.
- Not to be confused with Right bracket, nor Leftbracket.
Bracket is a programming language that only uses brackets
Commands
| Units | How |
|---|---|
| [ | Add one |
| ] | Subtract one |
| [[ | Output ASCII |
| ]] | Output number |
| [] | Input |
| ][ | Apple 2 |
| ( | Start loop, stops when the top of the stack is 1 or 0 |
| ) | End loop |
| : | Separator |
| [[[ | Go up |
| ]]] | Go down |
| [[]] | If the top of the stack, is 0 then jump to the nearest [][, if 1, ][], else no goto |
| [][ | Go to result |
| ][] | Go to result |
| [][] | Ends the program |
| [[][ | Create var |
| [[] | Var add |
| []] | Var subtract |
| ][]] | Output var |
| & | Output as the input, used for setting vars from input |
| ][][ | Spider |
| ; | Comment and ends line |
You can also switch around the brackets and the parentheses, for some reason.
Examples
XKCD Random Number
Normal:
[:[:[:[:]]:[][];
Swap:
(;(;(;(;));()():
Umm:
<.<.<.<.>>.<><>,
Cat
[:[:(:[]:[[:):[][];
Yeah