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Deadfish Language

Tool to interpret the Deadfish, an extremely basic programming language only able to display numbers via only 4 commands.

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Deadfish Language -

Tag(s) : Programming Language

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Deadfish Language

Deadfish Interpreter/Decoder






Deadfish Encoder





See also: Brainfuck

Answers to Questions (FAQ)

How to write in Deadfish?

The deadfish is a programming language simplified to the extreme using a single memory cell (initialized at 0) and 4 functions:

iincrements the memory cell (+1)
ddecrement the memory cell (-1)
ssquare (^2) the value of the memory cell
odisplays the value of the memory cell

Example: To code the number 8, it is possible to write iiiiiiiio (8 increments and output) or iisiiiio (2 increments = 2, then squared = 4, 4 increment = 8 and output) or also iisdo (3 increments = 3, then squared = 9, 1 decrement = 8 and output)

How to decrypt a Deadfish code?

Deadfish is not a cipher but a programming language, so use an interpreter to launch the program and display the result.

Example: iiiso corresponds to 3 increments i (+1+1+1=3), then a squaring s (3^2=9) and display of the result o, ie the number 9

The program can only display numbers, but those can use a given nomenclature (ASCII code, A1Z26, etc.) to get a plain text.

How to recognize a Deadfish code?

Deadfish has only 4 distinct letters, by default i, s, d and o in lower case.

The amount of i and d is generally greater than the amount of o and s.

There are as many o as numbers (or characters) in the output values from the program.

What are the variants of Deadfish?

The XKCD site has proposed a variant with its own letters replacing i with x, s with' k and o with c ( d rest).

Due to its design and level of abstraction, Deadfish resembles the Brainfuck family of languages.

Who did create Deadfish?

Deadfish have been created by Jonathan Todd Skinne

Source code

dCode retains ownership of the online "Deadfish Language" source code. Except explicit open source licence (indicated CC / Creative Commons / free), the "Deadfish Language" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or the "Deadfish Language" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, copy-paste, or API access for "Deadfish Language" are not public, same for offline use on PC, tablet, iPhone or Android ! Remainder : dCode is free to use.

Need Help ?

Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!

Questions / Comments

Thanks to your feedback and relevant comments, dCode has developed the best 'Deadfish Language' tool, so feel free to write! Thank you!


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