@Optimizer and yes, it would be really annoying if you got a notification on the main site for every ping in chat while you're currently active in chat
@Sp3000 have you seen the new clues for the star wars word search cryptogram?
I actually looked into all those things at the beginning, but I figured a) there weren't enough words and b) his "the order doesn't matter" comment was totally misleading.
@Optimizer hm, I wonder if it would be possible to fix that if people aren't currently in the chatroom. although I'm pretty sure someone has complained about it on MSE already
@MartinBüttner Looking at the clues I'm not sure how I feel... either the solution is really nice or the puzzle seems messily constructed, and I can't quite tell which right now...
Shortest Minmod Function
code-golfmath
The minmod function is a variant of the familiar min, which appears in slope-limiting high-resolution schemes for partial differential equations. The function takes an arbitrary (nonzero) number of parameters. Then minmod(x1, x2, ..., xn) is defined as:
...
(the leaderboard for the test question is a bit of a mess... to read out the language from answer answer, I'll have to require a slightly stricter heading format than the answers on the test question used)
should I make the inputs integers? I doubt it will affect any solutions, but it might be more inclusive for some esoteric languages
Ahaha, right. I feel that some languages would require a little reinterpretation of the rules, e.g. FRACTRAN can't take arrays as input, so the input would have to be encoded in some way. Piet sounds doable though [/running through languages in my head]
Actually what am I thinking, FRACTRAN doesn't have negative numbers either. Can't use that at all :P
The minmod function is a variant of the familiar min, which appears in slope-limiting high-resolution schemes for partial differential equations. It picks out the number with the smallest absolute value. The function takes an arbitrary (nonzero) number of parameters. Then minmod(x1, x2, ..., xn) ...
@xnor not that I'm aware of... there are these CDF player files, and there are a few open-source implementations of Mathematica, but those aren't complete
so banning sorting and using a method that internally uses sorting is equivalent to banning calculating pimes and using a method that calculated prime factors ;)
@MartinBüttner i regret to inform you that in my esoteric language, ,,,, , chars ,, bytes,, i wrote a solution of 15844 chars, which i will write comma-separated
Writing the Hydra Function
restricted-source optimization
Preamble
Sometime in the early 21st century, computer scientists would discover the Hydra function (also known as the Lächerlich function), f, whose signature is given by
R = f( A, B, L, x, y, z )
where A, B, L, and R are finite in...
Well, "Writing the Hydra Function" is one heck of a spec to work through, but I'd appreciate some feedback on it. I'll be AFK for a few hours, but rest assured I'll be back to check on it. :)
@COTO You can't just implement the ternary operator as a function.
Function arguments are usually evaluated before the function is called, which is not true for the operands of the ternary operator.
the modulo implementation doesn't seem right to me, was x / k supposed to be x % k?
@COTO It sounds quite fun, but I think you'd better off in this case to restrict this to a single language and provide an online tester and test harness for that language (e.g. C and ideone, and write some boilerplate code for the function definition and all the operators that need custom implementations)... it would probably shorten the spec a lot in the parts where you talk about equivalent statements.
no one can use language-specific features anyway if they're playing by the rules
(also haha, you've got minmod in there)
should 28 and 29 be left-shifts?
and if those integers are mathematical concepts, how are we supposed to return the correct R for stuff like pow if we don't use BigInts?
Writing the Hydra Function
restricted-source optimization
Preamble
Sometime in the early 21st century, computer scientists would discover the Hydra function (also known as the Lächerlich function), f, whose signature is given by
R = f( A, B, L, x, y, z )
where A, B, L, and R are finite in...
