,System.Linq.Expressions.Expression{System.Func{--0,--1}})} ,System.Linq.Expressions.Expression{System.Func{--0,System.Int32,--1}})}

Qbservable.Select(IQbservable, Expression>) method¶

Defined in

Type: Qbservable Namespace: System.Reactive.Linq Assembly: System.Reactive.dll

Applies to

netstandard2.0

Overloads¶

1. public static IQbservable<TResult> Select<TSource, TResult>(this IQbservable<TSource> source, Expression<Func<TSource, TResult>> selector)
2. public static IQbservable<TResult> Select<TSource, TResult>(this IQbservable<TSource> source, Expression<Func<TSource, int, TResult>> selector)

public static IQbservable<TResult> Select<TSource, TResult>(this IQbservable<TSource> source, Expression<Func<TSource, TResult>> selector)

Summary: Projects each element of an observable sequence into a new form.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence.
`TResult`	The type of the elements in the result sequence, obtained by running the selector function for each element in the source sequence.

Parameters

Name	Type	Description
`source`	[IQbservable](#	A sequence of elements to invoke a transform function on.
`selector`	Expression>	A transform function to apply to each source element.

Returns: IQbservable -- An observable sequence whose elements are the result of invoking the transform function on each element of source.

Exceptions

Type	Condition
System.ArgumentNullException	`source` or `selector` is null.

public static IQbservable<TResult> Select<TSource, TResult>(this IQbservable<TSource> source, Expression<Func<TSource, int, TResult>> selector)

Summary: Projects each element of an observable sequence into a new form by incorporating the element's index.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence.
`TResult`	The type of the elements in the result sequence, obtained by running the selector function for each element in the source sequence.

Parameters

Name	Type	Description
`source`	[IQbservable](#	A sequence of elements to invoke a transform function on.
`selector`	Expression>	A transform function to apply to each source element; the second parameter of the function represents the index of the source element.

Returns: IQbservable -- An observable sequence whose elements are the result of invoking the transform function on each element of source.

Exceptions

Type	Condition
System.ArgumentNullException	`source` or `selector` is null.