Linked Questions

Introduction Alice is a 2-d language by Martin Ender which has two different execution modes, cardinal and ordinal. When the instruction pointer passes through a mirror (either ...

Suppose you have 2 languages, A and B. A string s is a semiquine in ...

Make a quine but with a twist. Statement The quine prints its code but puts its first character at the end. (You can do it in reverse but include that note in your answer) The output must then be a ...

Create quine variant such that the program prints its first character, then the first two, then three and so on until the whole program is printed. Example Suppose your code is ...

And in particular the second law: the entropy of an isolated system increases over time. For this challenge, An "isolated system" will be taken to be a program or function (abbreviated as "program" ...

The narcissist is a program which, given its own source as input, prints a truthy value and, given anything other than that, prints a falsey value. Today, we're reversing this. Create a program that, ...

(Inspired by this comment on an old question.) Background An error quine (also known as a "Kimian quine") is a program which, when compiled or run, causes the compiler/interpreter/runtime to print ...

Write a proper quine whose every rotation is itself a proper quine. For example, if your source code is abcdef, then: abcdef ...

Create three programs, which we'll call Rock, Paper, and Scissors. Each program must be unique, and accept input. If a program gets any input which is not one of the programs Rock, Paper or ...

Inspired by this question. Create a program that prompts the user to store some data, and when the program is quitting, spit out the program itself, except the session data changed. The user then ...

Let's define a 2-quine as a program that prints its source code two times. For example, if the program ABC printed ABCABC, it ...

In the context of quines, an intron (or payload) is a part of a quine that serves no purpose in producing output, but is still included in the data section. For example: ...

A very simple golf this time, but should be fun to do. Challenge Output your code, but rotated 45 (or -45) degrees. E.g: lorem ipsum dolor sit amet becomes <...

Challenge Return the full contents of your program, but inverted. How do your invert something? Well, Letters: Take the position of the letter in the alphabet, subtract from 26, and use the letter ...