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APL (Dyalog Unicode), 110 67 bytes {(⍕((f⊖⍪'AEBFCGDAEBFD'),r⌽12↑¯6↑5⍴'-')⍳2↑⍵),⎕a⌷⍨1+0≠f←¯3+r←3×'i'∊⍵} -43 bytes from dzaima. Requires input exactly as shown in the diagram. A bit fiddly with...
For this to work, I think we need to rule out all start-up code (the C runtime) but also the register maps. So I think answers should be a void main (void){ ... } (or equivalent) function solution ...
Haskell, 21 bytes f=0:scanl((+).(*2))1f Try it online!
What general tips do you have for golfing in Scala? I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to Scala (e.g. "remove comments" i...
Making a function with val can be shorter than with a def If you're pattern matching, you can use Scala's special syntax and omit match when assigning an anonymous function to a val. As you can se...
APL (Dyalog Unicode), 32 bytes (SBCS) {⊃(⊢(/⍨)⍵=+/¨),∘.,⍨(⊢~∘.×)⍨1↓⍳⍵} Try it online! {⊃(⊢(/⍨)⍵=+/¨),∘.,⍨(⊢~∘.×)⍨1↓⍳⍵} ⍳⍵ ⍝ Range from 1 to n ...
Husk, 8 bytes ΣTm?I₀ε½ Try it online! It's jelly but reversed. 1 byte lesser due to a single byte halve.
APL(Dyalog Extended), 32 bytes SBCS {1=≢⍵:⍵⋄0~⍨,⍉↑∇¨↓2 ¯1⍴⍵,0/⍨2|≢⍵} Try it on APLgolf! A dfn submission which takes a string as input. I thought this would be much shorter, but it's only a s...
APL (Dyalog Unicode), 30 29 bytes Saved 1 byte thanks to Razetime (could've saved 1 more with a tradfn, but I didn't feel like it) {∧/(0=1|+/÷≢)¨1↓¨g¨(g←∪⊢∨⍳)⍵} Try it online! This answer w...
Husk, 9 bytes ΛöS=⌊AhḊḊ Try it online! or Verify all testcases returns number of divisors + 1 for true and 0 for false.
BQN, 33 bytesSBCS >(⌽(⊑¨55↑+˜⊸+⊔'0'+⌽⊸⌊⊸⌊)¨˜1↓↑)↕28 Run online! Minimum of barycentric coordinates placed according to a skew transformation on two of them. So, the min(i,j,27-i-j) thing pr...
Python 3.8 (pre-release), 62 bytes f=lambda x,a=[]:f(x[1:],a+[x[0]]if x[0]else a[:-1])if x else a Try it online! -11 bytes thanks to user
JavaScript (Node.js), 41 40 bytes Saved 1 byte thanks to Shaggy x=>x.map(e=>e?a.push(e):a.pop(),a=[])&&a Try it online! x => //x is the input x.map(e=> //For every...
I haven't been involved enough in SE Code Golf to really count for much. But I do think we need to have policies stated somewhere. One advantage we have here is that once policies get reasonably fi...
I think there should be a standard set of tabs to use in Sandbox to indicate that a post has been turned into a Challenge, and possibly for other Sandbox-specific status issues as well.
JavaScript (Node.js), 57 56 bytes f=(a,b='/\\')=>a--?''.padEnd(a)+b+` `+f(a,'/'+b+'\\'):'' Try it online!
Canvas, 9 7 bytes Ｈ/×║∔｝ｒ Try it here! Explanation H/×║+}r H } push empty art and start a loop from 1..n /× repeat '/' i times ║ palindromize horizontally(no overlap) ...
Python 2, 57 bytes a,x=1,input() exec'print" "*(x-a)+"/"*a+"\\\\"*a;a+=1;'*x Prints it out line by line Try it online!
Python 2, 37 bytes l=input() while 1:print len(l);l=l[0] Try it online! This makes heavy use of programs being allowed to terminate with error, which I assume is allowed by default because ...
C (compliant), 19 bytes (gcc -std=c18 -pedantic-errors) int main(){main();} Godbolt
