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@kirjavascript
kirjavascript / h.js
Last active May 4, 2020 16:13
function h(tag, attrs = {}, children = []) {
const node = document.createElement(tag);
node.__children = children;
Object.entries(attrs).forEach(([k, v]) => {
/^on/.test(k)
? node.addEventListener(k.slice(2), v)
: node.setAttribute(k, v);
});
return node;
}
@kirjavascript
kirjavascript / conditional-display.js
Last active February 4, 2020 20:50
const {
str,
char,
digits,
letters,
sequenceOf,
anythingExcept,
anyOfString,
many,
choice,
@kirjavascript
kirjavascript / confetti.html
Created January 21, 2020 13:06
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width" />
<title>Fetti</title>
<style>
div {
left: 50%;
right: 50%;
@kirjavascript
kirjavascript / combineProviders.js
Created November 20, 2018 10:56
function combineProviders(providers) {
return class Combined extends React.Component {
render() {
return (
providers.reverse().reduce((acc, Provider) => (
<Provider>{acc}</Provider>
), this.props.children)
);
}
}
@kirjavascript
kirjavascript / contexthook.js
Created November 19, 2018 22:06
// custom hook: useStore
const ctx = createContext();
export const Store = ({ children }) => {
const [state, setState] = useState(initialState);
const mergeState = useCallback((obj) => {
setState(state => ({ ...state, ...obj }));
}, []);
@kirjavascript
kirjavascript / calc.rs
Created November 4, 2018 11:21
#[derive(Debug, Clone, PartialEq)]
enum Token {
Op(char),
Num(f64),
}
fn prec(op: char) -> usize {
match op {
'*' | '/' => 3,
'+' | '-' => 2,
@kirjavascript
kirjavascript / wasm.js
Last active November 2, 2018 13:16
WASM golf
// regpack version
_="m=zInstance(zModule(v[0,97q5{9~|||~^3Z,96|~`7,3^0Zj4^2Zq2|j5^1Z|~,6`9}j7~46},2,6{9{1{9q1q4`1,2j5{4_||{^8Z^2}Yq~46ZY`,72_,32,87q1q4{8{0|])));h=vkmemory.buffer);s='';for(i=khello();h[i];i++)s+=String.fromCharCode(h[i]);console.log(s)~,1}`8`8`8|j0{~0znew WebAssembly.vnew Uint8Array(q~1km.exports.j|,`~2_{1{8{8q1^~3Z}~Yj65~6q";for(i of"YZ^_`jkqvz{|}~")with(_.split(i))_=join(pop());eval(_)
https://wasdk.github.io/WasmFiddle/?wvzhb
// failed idea
WebAssembly.instantiate(new Int8Array([0,97,115,109,1,0,0,0,4,132,128,128,128,0,1,112,0,0,5,131,128,128,128,0,1,0,1,6,129,128,128,128,0,0,7,138,128,128,128,0,1,6,109,101,109,111,114,121,2,0,11,155,128,128,128,0,2,0,65,16,11,12,72,101,108,108,111,32,87,111,114,108,100,0,0,65,28,11,4,16,0,0,0])).then(q=>console.log([...new Int8Array(q.instance.exports.memory.buffer)].slice(16,27).map(a=>String.fromCharCode(a)).join``))
// change name to e
m=new WebAssembly.Instance(new WebAssembly.Module(new Uint8Array([0,97,115,109,1,0,0,0,1,133,128,128,128,0,1,96,0,1
@kirjavascript
kirjavascript / thing.js
Created March 4, 2018 20:03
worst api ever
const http = new Proxy({}, {
get(t, k) {
const url = `https://crossorigin.me/http://${k.replace(/_/g, '.')}`;
return new Proxy({}, {
get(t, k) {
fetch(url)
.then(res => res.text())
.then(res => {
(new Function(`return (${k})(\`${res.replace(/`/g, '\\`')}\`)`))()
});
@kirjavascript
kirjavascript / animate.js
Last active July 6, 2017 07:52
animation primitives
// Usage;
//
// tween((t) => {
// const i = lerp(-20, 100, ease(t));
// console.log(i);
// }, 500);
function tween(callback, ticks = 500) {
let timer = performance.now();
@kirjavascript
kirjavascript / toString.js
Created February 27, 2017 21:35
toString[(""+toString)[!!toString+!!toString]+(""+!toString)[+!!toString]+(+(+[!+toString+!+toString]+[!+toString+!+toString])).toString(+([!+toString+!+toString]+[!+toString+!+toString+!+toString]))+(!!toString+toString)[!+toString+!+toString+!+toString]]