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A quine is a program which produces its source as output. This tag indicates that the challenge is related to quines. [self-referential] should be used for challenges that, while having the output have some relation to the source code, do not require fully reproducing the source.

22 votes
9 answers
929 views

Generate a Markdown Template for your Post

Your task is simple: Write a program (or function) that takes no input and outputs something like this: ## *name*, *length* bytes *code* Where *name* is the name of the language you are using, …
Esolanging Fruit's user avatar
12 votes
4 answers
663 views

Entropic Quine!

After the first execution, your program will not necessarily be a quine anymore; the output will have changed (and the program is free to modify itself as well). … For example, if your quine was ABCD, repeatedly running it might print: ABCD A!CD j!CD j! …
Esolanging Fruit's user avatar
25 votes
11 answers
1k views

Quote-Safe Quines

Your task is simple: write a program (or function) that takes no input and outputs (or returns) its source code. The catch is that when the program is wrapped in "quotes" (Unicode character 34), it sh …
Esolanging Fruit's user avatar
17 votes
2 answers
650 views

Quine/Error Quine Polyglot

It should be a normal quine (prints its own source code) in language 1, and should be an error quine (generates an error message identical to its own source code) in language 2. … The error quine rules are the same as those in Make an Error Quine!. …
Esolanging Fruit's user avatar