github at esdiscuss.org (2013-07-12T02:27:21.263Z)
> class AsyncTable<T,U> {
> constructor() {
> this.m = Map<T,U>(); // encapsulation doesn't matter for this example
> }
> set(keyP :Promise<T>, val :U) {
> keyP.then(key => { this.m.set(key, val) });
> }
> get(keyP :Promise<T>) :Promise<U> {
> return keyP.then(key => this.m.get(key));
> }
> }
The way to make this work would be to lift the value stored in the map.
```js
get(keyP :Promise<T>) :Promise<U> {
return keyP.then(key => Q.fullfill(this.m.get(key)));
}
```
Do you agree? Is your premise that forgetting such a "lawyer-ly" detail will amount to a foot-gun?
> class AsyncTable<T,U> { >> constructor() { >> this.m = Map<T,U>(); // encapsulation doesn't matter for this >> example >> } >> set(keyP :Promise<T>, val :U) { >> keyP.then(key => { this.m.set(key, val) }); >> } >> get(keyP :Promise<T>) :Promise<U> { >> return keyP.then(key => this.m.get(key)); >> } >> } >> >> The way to make this work would be to lift the value stored in the map. get(keyP :Promise<T>) :Promise<U> { return keyP.then(key => Q.fullfill(this.m.get(key))); } Do you agree? Is your premise that forgetting such a "lawyer-ly" detail will amount to a foot-gun? { Kevin } -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20130510/818cba82/attachment.html>