,System.Linq.Expressions.Expression{System.Func{--0,--1}})} ,System.Linq.Expressions.Expression{System.Func{--0,--1}},System.Collections.Generic.IEqualityComparer{--1})} ,System.Linq.Expressions.Expression{System.Func{--0,--1}},System.Linq.Expressions.Expression{System.Func{--0,--2}})} ,System.Linq.Expressions.Expression{System.Func{--0,--1}},System.Linq.Expressions.Expression{System.Func{--0,--2}},System.Collections.Generic.IEqualityComparer{--1})}
Qbservable.ToLookup(IQbservable, Expression>) method¶
Defined in
Type: Qbservable
Namespace: System.Reactive.Linq
Assembly: System.Reactive.dll
Applies to
net8.0, net8.0-windows10.0.19041, net8.0-ios17.5, net8.0-maccatalyst17.5, net8.0-macos14.2, net8.0-macos14.5, net8.0-tvos17.2, netstandard2.0
Overloads¶
- 1.
public static IQbservable<ILookup<TKey, TSource>> ToLookup<TSource, TKey>(this IQbservable<TSource> source, Expression<Func<TSource, TKey>> keySelector) - 2.
public static IQbservable<ILookup<TKey, TSource>> ToLookup<TSource, TKey>(this IQbservable<TSource> source, Expression<Func<TSource, TKey>> keySelector, IEqualityComparer<TKey> comparer) - 3.
public static IQbservable<ILookup<TKey, TElement>> ToLookup<TSource, TKey, TElement>(this IQbservable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TSource, TElement>> elementSelector) - 4.
public static IQbservable<ILookup<TKey, TElement>> ToLookup<TSource, TKey, TElement>(this IQbservable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TSource, TElement>> elementSelector, IEqualityComparer<TKey> comparer)
1. Overload¶
public static IQbservable<ILookup<TKey, TSource>> ToLookup<TSource, TKey>(this IQbservable<TSource> source, Expression<Func<TSource, TKey>> keySelector)
Type parameters
| Name | Description |
|---|---|
TSource | -- |
TKey | -- |
Parameters
| Name | Type | Description |
|---|---|---|
source | [IQbservable | -- |
keySelector | Expression | -- |
Returns: IQbservable
2. Overload¶
public static IQbservable<ILookup<TKey, TSource>> ToLookup<TSource, TKey>(this IQbservable<TSource> source, Expression<Func<TSource, TKey>> keySelector, IEqualityComparer<TKey> comparer)
Type parameters
| Name | Description |
|---|---|
TSource | -- |
TKey | -- |
Parameters
| Name | Type | Description |
|---|---|---|
source | [IQbservable | -- |
keySelector | Expression | -- |
comparer | IEqualityComparer | -- |
Returns: IQbservable
3. Overload¶
public static IQbservable<ILookup<TKey, TElement>> ToLookup<TSource, TKey, TElement>(this IQbservable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TSource, TElement>> elementSelector)
Type parameters
| Name | Description |
|---|---|
TSource | -- |
TKey | -- |
TElement | -- |
Parameters
| Name | Type | Description |
|---|---|---|
source | [IQbservable | -- |
keySelector | Expression | -- |
elementSelector | Expression | -- |
Returns: IQbservable
4. Overload¶
public static IQbservable<ILookup<TKey, TElement>> ToLookup<TSource, TKey, TElement>(this IQbservable<TSource> source, Expression<Func<TSource, TKey>> keySelector, Expression<Func<TSource, TElement>> elementSelector, IEqualityComparer<TKey> comparer)
Type parameters
| Name | Description |
|---|---|
TSource | -- |
TKey | -- |
TElement | -- |
Parameters
| Name | Type | Description |
|---|---|---|
source | [IQbservable | -- |
keySelector | Expression | -- |
elementSelector | Expression | -- |
comparer | IEqualityComparer | -- |
Returns: IQbservable