In tribute to this XKCD comic, make sure that your language's random function returns 4.
Rules:
In your programming language, you must override the normal random number generator to do the following:
Generate a random number
Check if the number generated equals 4.
If it doesn't equal 4, warn ...
ES6, 2557 bytes
It isn't so much golfed per se; it's minified - partly by hand - but that's nothing special. So it could no doubt be shorter if I'd golfed it more before minifying, but I've spent (more than) enough time on this already.
G=(d)=>{M=Math,sa='setAttribute';ac='appendChild';tl='getT...
Calculating the Frobenius number
code-golf
The Frobenius number is the largest number that cannot be created by units in a given set. This is also known as the Coin problem. WolframAlpha has a wonderful description of the problem, and this paper gives an algorithm to solve over an arbitrarily l...
Make a folder
file-systemcode-golf
The challenge is simple; take a string input and make a folder with that name.
Definition
Your folder must have all of the following traits:
It must be recognized as a directory by your system (if you did ls -al on a Linux based system, it should be able t...
The Pacific Crest Trail (commonly abbreviated as the PCT, and officially designated as the Pacific Crest National Scenic Trail) is a long-distance hiking and equestrian trail closely aligned with the highest portion of the Sierra Nevada and Cascade mountain ranges, which lie 100 to 150 miles (160 to 240 km) east of the U.S. Pacific coast. The trail's southern terminus is on the U.S. border with Mexico, just south of Campo, California, and its northern terminus on the U.S.–Canada border on the edge of Manning Park in British Columbia; its corridor through the U.S. is in the states of California...
