57
votes
57
votes
Reserved JavaScript
43 words, 603 bytes
Uhm, is this a loophole? I have no idea how the hell this is legal JS, but it works and it uses every single keyword.
...
- 779
36
votes
36
votes
Accepted
Get string "-" with JavaScript using only the symbols from "+[]"
260 ... 210 205 bytes
Saved 5 bytes thanks to @user202729
...
- 206k
33
votes
xkcd 2385 KoTH (Final Exam)
Game Theory is stupid anyway
{
name: "Game Theory is stupid anyway",
run: _ => 100
}
Senioritis hits hard sometimes.
- 5,532
29
votes
xkcd 2385 KoTH (Final Exam)
Balanced Strategy
What could be more balanced than returning all of the numbers? Rotates by one after every game.
...
- 399
27
votes
xkcd 2385 KoTH (Final Exam)
FunnyNumber
{
name: "FunnyNumber",
run() { return 69 }
}
Somebody has to do it.
- 2,480
27
votes
Accepted
xkcd 2385 KoTH (Final Exam)
Offset Prediction
I'd made a bot that just optimizes for the moving average of the averages (which worked reasonably well), and while testing I noticed that the actual averages seem to jump around the ...
- 3,456
26
votes
Tips for golfing in JavaScript
Abuse literals
The recent sample: Check whether "c" is uppercase or lowercase, doesn't matter if not letter
...
- 32.7k
26
votes
Accepted
Can `a?b<c:b>c` be shortened in Javascript?
Yes, it can be shorter!
c-b<a^a beats a?b<c:b>c by 2 bytes. My tests show that it works for any integer, including ...
- 23.4k
25
votes
Accepted
Is it possible to make a clamp function shorter than a ternary in JS?
20 bytes
For reference, this is the original version without whitespace and without naming the function:
n=>n>0?n<255?n:255:0
Try it online!
19 bytes
We ...
- 206k
24
votes
23
votes
xkcd 2385 KoTH (Final Exam)
Max
Max.
{
name: "Max",
max: "max",
run:(max)=> Math.max(...max)
}
- 27.6k
22
votes
xkcd 2385 KoTH (Final Exam)
Sam (Self-Aware Maximizer)
Finds the output cybersecurity score that maximizes the total score including the own output in the mean. Assumes that the sum of all other bots' scores is going to be the ...
- 321
21
votes
xkcd 2385 KoTH (Final Exam)
Copycat
Copycat is a dumb bot. Therefore, it's likely a random bot is smarter than it. Therefore, copying off another bot is a good idea. I think.
...
- 19.3k
19
votes
19
votes
Shortest way to coerce to array
10 bytes
[s].flat()
This works by doing a shallow flat on [s]. So, if s is anything other ...
- 19.3k
17
votes
Creating a function over multiple lines
35 Lines
f=
0[
c=
'\
c\
o\
n\
s\
t\
r\
u\
c\
t\
o\
r'
][
c]
`
r\
e\
t\
u\
r\
n\
'\
b\
a\
r\
b\
a\
r\
i\
a\
n'
`
Try it online!
Uses the fact that ...
- 79.3k
17
votes
WTF.js Obfuscator
I have a solution which works if you have infinite time and memory. I'm not 100% sure whether that's allowed within the rules here; I searched on codegolf.meta.SE and didn't find anything saying that ...
- 549
17
votes
xkcd 2385 KoTH (Final Exam)
Histogrammer
This bot keeps track of how often different averages have occurred, rounded to the nearest integer, to approximate their probability distribution. Using this, it attempts to choose the ...
- 4,105
16
votes
15
votes
Prisoner's Dilemma with access to opponent
BoomBot
function boom(them) {
throw 1;
}
If the opponent is run first and calls this without try..catch, this bot ...
- 79.3k
15
votes
xkcd 2385 KoTH (Final Exam)
Crb
Crab has now learned how to hack, and is still not playing nice
{
name: "Crb",
run() { return 1 }
}
- 50.9k
15
votes
xkcd 2385 KoTH (Final Exam)
Follow the Leader
Figure out which bot had the highest combined score last round, then do what they did.
...
- 271
14
votes
Tips for golfing in JavaScript
Converting an array of strings into numbers
Take the array ["32", "0x30", "0o10", "7.642", "1e3"]. The simple way ...
- 19.3k
14
votes
Get string "-" with JavaScript using only the symbols from "+[]"
286 256 251 247 244 240 bytes
...
- 136k
14
votes
xkcd 2385 KoTH (Final Exam)
Random 50-90
If the average is \$m\$, the optimal play is \$50+0.4m\$. If we assume the average is uniformly distributed over \$[0, 100]\$, the optimal play is uniformly distributed over \$[50, 90]\$. ...
- 15.8k
13
votes
Formic Functions - Ant Queen of the Hill Contest
Windmill
Here's a windmill... waiting for the Man from la Mancha (or Vampire from la Mancha?) who will ride up to bring it down.
I tried to explore how much further the design of Miners on a Rail - ...
- 261
13
votes
13
votes
Only top scored, non community-wiki answers of a minimum length are eligible