Linked Questions

The challenge is simple: Print the last, middle, and first character of your program's source code, in that order. The middle character is defined as follows, assuming a source length of ...

Write a program that prints its own source code out backwards, in other words an eniuq. Scoring: +50 if you use pull data from the Internet. +25 if you read your own source code. +1 point per ...

What general tips do you have for golfing in Haskell? I am looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to Haskell. Please post only one ...

This is the cop's thread of a cops-and-robbers challenge. You can view the robber's thread here A pretty common beginner style question is to print some string, but, there's a catch!, you need to do ...

Stack Snippets were recently added to PPCG! Reminiscent of JSFiddle, Stack Snippets allow HTML, CSS, and JavaScript to be run directly in posts! Here is a very simple Stack Snippet: ...

Write a program that will generate a "true" output iff the input matches the source code of the program, and which generates a "false" output iff the input does not match the source code of the ...

Challenge Given the number of an XKCD comic, output the title text of that comic (the mouseover text). However, the program must throw an error when given the numbers ...

Write a program (or function) (let's call it P1), that when run, outputs another program P2 of the same language and exactly 1 byte longer than P1. Program P2 when run, should output a 3rd program P3 ...

Challenge Write a non-empty program/function p that, given a non-empty input string s, outputs the position of the first ...

What is the shortest way of generating a random string with a given length and with only alphanumeric characters allowed? example of a random string: with N = 9 output would be ...

In this question I asked you to guess an anagram quine based on its output. However it looks like we don't have a question asking to golf an anagram quine yet. So your task will be to make the ...

Your goal is to create a program that prints itself indefinitely, with a new line after each one. Thus, if your program is a one-liner, it would be repeated on every line of the output. Example ...

Write a cat program, a quine, and a Hello World in the same language such that when two specific programs of the three are concatenated in a certain order, you get the third program. It does not ...

or: Build a vertical quine Inspired by Take a stand against long lines. Your task is to build a vertical quine with as short a line length as possible. Scoring Shortest line length (excluding ...

Write a quine that consists of real English words separated by single spaces. A "word" is defined as a string containing only lowercase and uppercase letters (...