public static IPInvokeObservable <T> TakeWhile <T>(this IPInvokeObservable <T> @this, Func <T, int, bool> func)
{
bool flag = true;
int i = 0;
return(@this.Observe(new PInvokeQuery <T, T>((s, v) => (flag &= func(v, i++)) && s.OnNext(v))));
}
public static IPInvokeQueryEndNode <float?> Max <T>(this IPInvokeObservable <T> @this, Func <T, float?> func)
=> @this.Aggregate(
default(float?),
(accumulate, v) =>
{
var value = func(v);
return((value > accumulate) ? value : accumulate);
});
public static IPInvokeQueryEndNode <decimal?> Min <T>(this IPInvokeObservable <T> @this, Func <T, decimal?> func)
=> @this.Aggregate(
default(decimal?),
(accumulate, v) =>
{
var value = func(v);
return((value < accumulate) ? value : accumulate);
});
public static IPInvokeQueryEndNode <T> LastOrDefault <T>(this IPInvokeObservable <T> @this)
{
T value = default(T);
return(@this.Observe(new PInvokeQueryEndpoint <T, T>(
v => value = v,
() => value)));
}
public static IPInvokeQueryEndNode <List <T> > ToList <T>(this IPInvokeObservable <T> @this)
=> @this.Aggregate(
new List <T>(),
(list, v) =>
{
list.Add(v);
return(list);
});
public static IPInvokeQueryEndNode <int> Count <T>(this IPInvokeObservable <T> @this)
{
int count = 0;
return(@this.Observe(new PInvokeQueryEndpoint <T, int>(
v => count++,
() => count)));
}
public static IPInvokeQueryEndNode <bool> Any <T>(this IPInvokeObservable <T> @this, Func <T, bool> func)
{
bool flag = false;
return(@this.Observe(new PInvokeQueryEndpoint <T, bool>(
v => (flag |= func(v)),
() => flag)));
}
public static IPInvokeQueryEndNode <float> Max <T>(this IPInvokeObservable <T> @this, Func <T, float> func)
=> @this.Aggregate(
default(float?),
(accumulate, v) =>
{
var value = func(v);
return((value > accumulate) ? value : accumulate);
},
accumulate => accumulate ?? throw new InvalidOperationException());
public static IPInvokeObservable <T2> SelectMany <T1, T2>(this IPInvokeObservable <T1> @this, Func <T1, IEnumerable <T2> > func)
=> @this.Observe(new PInvokeQuery <T1, T2>((s, v) =>
{
foreach (var item in func(v))
{
if (!s.OnNext(item))
{
return(false);
}
}
return(true);
}));
public static IPInvokeQueryEndNode <bool> Any <T>(this IPInvokeObservable <T> @this)
{
bool flag = false;
return(@this.Observe(new PInvokeQueryEndpoint <T, bool>(
v =>
{
flag = true;
return false;
},
() => flag)));
}
public static IPInvokeQueryEndNode <T> Last <T>(this IPInvokeObservable <T> @this)
{
bool hasValue = false;
T value = default(T);
return(@this.Observe(new PInvokeQueryEndpoint <T, T>(
v =>
{
hasValue = true;
value = v;
},
() => hasValue ? value : throw new InvalidOperationException())));
}
public static IPInvokeQueryEndNode <int> Count <T>(this IPInvokeObservable <T> @this, Func <T, bool> func)
{
int count = 0;
return(@this.Observe(new PInvokeQueryEndpoint <T, int>(
v =>
{
if (func(v))
{
count++;
}
},
() => count)));
}
public static IPInvokeQueryEndNode <bool> All <T>(this IPInvokeObservable <T> @this, Func <T, bool> func)
{
bool?flag = null;
return(@this.Observe(new PInvokeQueryEndpoint <T, bool>(
v =>
{
var f = flag ?? true;
f &= func(v);
flag = f;
return flag.Value;
},
() => flag ?? false)));
}
internal static TObserver Observe <T, TObserver>(this IPInvokeObservable <T> @this, TObserver observer)
where TObserver : IPinvokeObserver <T>
{
if (@this == null)
{
throw new ArgumentNullException(nameof(@this));
}
if (observer == null)
{
throw new ArgumentNullException(nameof(observer));
}
@this.Subscribe(observer);
return(observer);
}
public static IPInvokeQueryEndNode <T> Aggregate <T>(this IPInvokeObservable <T> @this, Func <T, T, T> func) => @this.Aggregate(default(T), func);
public static IPInvokeQueryEndNode <T> LastOrDefault <T>(this IPInvokeObservable <T> @this, Func <T, bool> func) => @this.Where(v => func(v)).LastOrDefault();
public static IPInvokeObservable <T2> Select <T1, T2>(this IPInvokeObservable <T1> @this, Func <T1, int, T2> func)
{
int i = 0;
return(@this.Observe(new PInvokeQuery <T1, T2>((s, v) => s.OnNext(func(v, i++)))));
}
public static IPInvokeObservable <T2> Select <T1, T2>(this IPInvokeObservable <T1> @this, Func <T1, T2> func) => @this.Observe(new PInvokeQuery <T1, T2>((s, v) => s.OnNext(func(v))));
public static IPInvokeQueryEndNode <ILookup <TKey, TValue> > ToLookup <T, TKey, TValue>(this IPInvokeObservable <T> @this, Func <T, TKey> keySelector, Func <T, TValue> valueSelector, IEqualityComparer <TKey> comparer)
=> @this.Aggregate(
new Lookup <TKey, TValue>(comparer),
(lookup, v) =>
{
lookup.Add(keySelector(v), valueSelector(v));
return(lookup);
});
public static IPInvokeQueryEndNode <ILookup <TKey, TValue> > ToLookup <T, TKey, TValue>(this IPInvokeObservable <T> @this, Func <T, TKey> keySelector, Func <T, TValue> valueSelector) => @this.ToLookup(keySelector, valueSelector, EqualityComparer <TKey> .Default);
public static IPInvokeQueryEndNode <ILookup <TKey, T> > ToLookup <T, TKey>(this IPInvokeObservable <T> @this, Func <T, TKey> keySelector, IEqualityComparer <TKey> comparer) => @this.ToLookup(keySelector, x => x, comparer);
public static IPInvokeQueryEndNode <Dictionary <TKey, TValue> > ToDictionary <T, TKey, TValue>(this IPInvokeObservable <T> @this, Func <T, TKey> keySelector, Func <T, TValue> valueSelector, IEqualityComparer <TKey> comparer)
=> @this.Aggregate(
new Dictionary <TKey, TValue>(comparer),
(dict, v) =>
{
dict.Add(keySelector(v), valueSelector(v));
return(dict);
});
public static IPInvokeQueryEndNode <Dictionary <TKey, T> > ToDictionary <T, TKey>(this IPInvokeObservable <T> @this, Func <T, TKey> keySelector) => @this.ToDictionary(keySelector, EqualityComparer <TKey> .Default);
public static IPInvokeObservable <T> Where <T>(this IPInvokeObservable <T> @this, Func <T, bool> func) => @this.Observe(new PInvokeQuery <T, T>((s, v) => func(v) || s.OnNext(v)));
public static IPInvokeObservable <T> Where <T>(this IPInvokeObservable <T> @this, Func <T, int, bool> func)
{
int i = 0;
return(@this.Observe(new PInvokeQuery <T, T>((s, v) => func(v, i++) || s.OnNext(v))));
}
public static IPInvokeQueryEndNode <TResult> Aggregate <T, TAccumulate, TResult>(this IPInvokeObservable <T> @this, TAccumulate seed, Func <TAccumulate, T, TAccumulate> func, Func <TAccumulate, TResult> resultSelector)
{
TAccumulate accumulate = seed;
return(@this.Observe(new PInvokeQueryEndpoint <T, TResult>(
v => accumulate = func(seed, v),
() => resultSelector(accumulate))));
}
public static IPInvokeQueryEndNode ForEach <T>(this IPInvokeObservable <T> @this, Action <T> action) => @this.Observe(new PInvokeQueryEndpoint <T>(v => action(v)));
public static IPInvokeQueryEndNode ForEach <T>(this IPInvokeObservable <T> @this, Action <T, int> action)
{
int i = 0;
return(@this.Observe(new PInvokeQueryEndpoint <T>(v => action(v, i++))));
}
public static IPInvokeObservable <T> Skip <T>(this IPInvokeObservable <T> @this, int count)
{
int i = 0;
return(@this.Observe(new PInvokeQuery <T, T>((s, v) => (i++ < count) || s.OnNext(v))));
}
public static IPInvokeQueryEndNode <TAccumulate> Aggregate <T, TAccumulate>(this IPInvokeObservable <T> @this, TAccumulate seed, Func <TAccumulate, T, TAccumulate> func) => @this.Aggregate(seed, func, x => x);
