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Atishay Jain atishay

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@atishay
atishay / save-solution.js
Created July 12, 2019 16:03
let saveWaiting = false;
function delaySaveIfRunning(args, promise) {
if ((promise instanceof Promise) ) {
if (promise.state === 'pending') {
if (!saveWaiting) {
saveWaiting = true;
promise.then(() => {
saveWaiting = false;
object.save.apply(object, args);
});
@atishay
atishay / memoize-save-rejector.js
Created July 12, 2019 16:02
function dontCallInParallel(args, promise) {
return (promise instanceof Promise) && (promise.state !== 'pending');
}
@atishay
atishay / memoize-rejector.js
Created July 12, 2019 16:01
function dontCacheRejections(args, promise) {
return (promise instanceof Promise) && (promise.state === 'rejected');
}
@atishay
atishay / memoize-rejection.js
Created July 12, 2019 16:00
function memoize(func, resolver, rejector) {
const memoized = function(...args) {
const key = resolver ? resolver.apply(this, args) : args[0]
const cache = memoized.cache
if (cache.has(key) && (!rejector || !rejector(args, cache.get(key)))) {
return cache.get(key);
}
const result = func.apply(this, args);
appendState(result); // Append state from above
memoized.cache = cache.set(key, result) || cache;
@atishay
atishay / memoize-state.js
Created July 12, 2019 15:59
function appendState(promise) {
if (promise instanceof Promise) {
promise.state = 'pending';
promise.then(x => {
promise.state = 'resolved';
});
promise.catch(e => {
promise.state = 'rejected';
});
}
@atishay
atishay / memoize-lodash.js
Created July 12, 2019 15:53
function memoize(func, resolver) {
const memoized = function(...args) {
const key = resolver ? resolver.apply(this, args) : args[0];
const cache = memoized.cache;
if (cache.has(key)) {
return cache.get(key);
}
const result = func.apply(this, args);
memoized.cache = cache.set(key, result) || cache;
return result;
@atishay
atishay / Memoize.js
Created April 6, 2019 16:30
function memoize(func, resolver) {
const memoized = function(...args) {
const key = resolver ? resolver.apply(this, args) : args[0]
const cache = memoized.cache
if (cache.has(key)) {
return cache.get(key)
}
const result = func.apply(this, args)
memoized.cache = cache.set(key, result) || cache
return result
@atishay
atishay / Parallel Calls.js
Created April 6, 2019 16:29
let data = null;
function get(cb) {
if (data) {
cb(data);
} else {
callbacks.push(cb);
}
if (callbacks.length === 1) {
...
data = response;
@atishay
atishay / time decorator.js
Last active March 30, 2019 15:20
// Convert to decorators
function Time(key) {
return function (target, functionName, descriptor) {
const x = target[functionName];
descriptor.value = async (...args) =>
await time(key, async () =>
await x.apply(target, args)
);
};
}
@atishay
atishay / checkpoint.js
Created March 30, 2019 15:19
class CheckpointBuilder {
...
}
async function time(name, method) {
const builder = new CheckpointBuilder(name);
await method(builder).finally(() => {
builder.post();
})
}