public static IPromise <D> Convert <S, D>(this IPromise <S> ext, Func <S, D> transform)
{
Deferred <D> def = new Deferred <D>();
IPromise <D> res = new PromiseImpl <D>();
ext.Done((value) => def.Resolve(transform(value)));
ext.Fail((e) => def.Reject(e));
return(res);
}
public static IPromise <T> Any <T>(this IEnumerable <IPromise <T> > ext)
{
Deferred <T> def = new Deferred <T>();
IPromise <T> res = new PromiseImpl <T>();
List <IPromise <T> > tmp = ext.ToList();
List <T> values = new List <T>();
foreach (IPromise <T> item in tmp)
{
item.Done((value) => def.Resolve(value));
item.Fail((e) => def.Reject(e));
}
return(res);
}
public static IPromise <IEnumerable <T> > All <T>(this IEnumerable <IPromise <T> > ext)
{
Deferred <IEnumerable <T> > def = new Deferred <IEnumerable <T> >();
IPromise <IEnumerable <T> > res = new PromiseImpl <IEnumerable <T> >();
List <IPromise <T> > tmp = ext.ToList();
List <T> values = new List <T>();
foreach (IPromise <T> item in tmp)
{
item.Done((value) =>
{
tmp.Remove(item);
values.Add(value);
if (tmp.Count == 0)
{
def.Resolve(values);
}
});
item.Fail((e) => def.Reject(e));
}
return(res);
}
public Deferred()
{
_promise = new PromiseImpl <T>();
}