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@brouwerfp
brouwerfp / Misskey Session Keeper.user.js
Last active July 16, 2023 15:40
Reloads the top page of Misskey in 30 min cycle to keep the session of your Misskey service, Usable in Tampermonkey
// ==UserScript==
// @name Misskey Session Keeper
// @namespace https://brouwerfp.org/
// @version 0.3
// @description try to take over the world!
// @author Brouwerfp
// @match https://misskey.brouwerfp.org/*
// @grant none
// ==/UserScript==
@brouwerfp
brouwerfp / Y.js
Last active July 16, 2023 15:43
(Pseudo-)Y combinator with given interval
(f) => ((x) => x(x))((x) => setTimeout(() => f(x(x)), interval)) // interval is given from anywhere
@brouwerfp
brouwerfp / Sierpinski gasket.js
Last active June 20, 2021 10:30
((s,n)=>{t="．".repeat(s[0].length>>1);for(i=0;i<n;i++)s=s.map(e=>t+e+t).concat(s.slice(1).map(e=>e+e.slice(1))),t+=t;return s.join("\n")})(["．．▽．．","．▽．▽．","▽▽▽▽▽"],4)
@brouwerfp
brouwerfp / PI.js
Last active September 4, 2020 10:57
(x=>{for(t=1;t>1e-16;x+=t)for(i=1,s=t=x;s;t+=s)s*=-x*x/++i/++i;return x})(3)
@brouwerfp
brouwerfp / primes.js
Last active September 3, 2020 07:31
(s=>{p=[];for(i=2;i<s;f||p.push(i),i++)for(j=f=0;p[j]*p[j]<=i;j++)f|=!(i%p[j]);return p})(10000)
@brouwerfp
brouwerfp / PI.js
Last active September 4, 2020 10:59
((l,r)=>{for(;r-l>1e-15;t>0?l=m:(r=m))for(s=m=t=(l+r)/2,i=1;s;t+=s)s*=-m*m/++i/++i;return m})(3,4)
@brouwerfp
brouwerfp / the division algorithm.txt
Last active July 18, 2023 15:24
s / t
where t ≠ 0
s / t = As / At
where 1 / 2 <= At < 1
As / At = As / {1-(1-At)}
∴ 0 < (1-At) <= 1 / 2
As / {1-(1-At)} = As*{1+(1-At)} / {1-(1-At)^2}
@brouwerfp
brouwerfp / make 33333 from [0, 10).js
Last active August 31, 2020 14:29
// https://twitter.com/tatsuosakamoto/status/1299922512474640387
(()=>{
let strategy = [[]];
let answer = [];
// register approaches to strategy
for(let i=0;i<5;i++){
@brouwerfp
brouwerfp / collatz.js
Last active August 2, 2020 07:13
((f,l)=>f(f,l))(((f,l,m=l[l.length-1])=>m!==1?f(f,l.concat(m%2?3*m+1:m/2)):l), [27])
@brouwerfp
brouwerfp / fizzbuzz.js
Created July 2, 2020 12:33
((f,N)=>f(f,N))((g,i)=>i?g(g,i-1).concat((i%3?"":"fizz")+(i%5?"":"buzz")||i):[],100)