| QueryableExMemoizeTSource, TResult Method (IQueryableTSource, ExpressionFuncIEnumerableTSource, IEnumerableTResult) |
Memoizes the source sequence within a selector function where each enumerator can get access to all of the sequence's elements without causing multiple enumerations over the source.
Namespace: System.Linq
Assembly: System.Interactive.Providers (in System.Interactive.Providers.dll) Version: 1.2.0.0
SyntaxC#
public static IQueryable<TResult> Memoize<TSource, TResult>( this IQueryable<TSource> source, Expression<Func<IEnumerable<TSource>, IEnumerable<TResult>>> selector )
Parameters
- source
- Type: System.LinqIQueryableTSource
Source sequence. - selector
- Type: System.Linq.ExpressionsExpressionFuncIEnumerableTSource, IEnumerableTResult
Selector function with memoized access to the source sequence for each enumerator.
Type Parameters
- TSource
- Source sequence element type.
- TResult
- Result sequence element type.
Return Value
Type: IQueryableTResultSequence resulting from applying the selector function to the memoized view over the source sequence.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IQueryableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).See Also