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ReactiveExtensions.TrySelect(IObservable, Func) method¶

Defined in

Type: ReactiveExtensions Namespace: ReactiveUI.Extensions Assembly: ReactiveUI.Extensions.dll

Applies to

net10.0, net10.0-browserwasm1.0, net10.0-desktop1.0, net9.0, net9.0-browserwasm1.0, net9.0-desktop1.0, net8.0, net8.0-ios17.5, net8.0-maccatalyst17.5, net8.0-macos14.2, net8.0-macos14.5, net8.0-tvos17.2, netstandard2.1, net462, net481

public static IObservable<TOut> TrySelect<TIn, TOut>(this IObservable<TIn> source, Func<TIn, TOut?> selector)

View source

Summary: Applies selector and emits only non-null results. Replaces .Select(f).Where(x => x is not null).Select(x => x!) with a single operator allocation.

Type parameters

Name	Description
`TIn`	The source element type.
`TOut`	The projected element type.

Parameters

Name	Type	Description
`source`	IObservable	The source observable.
`selector`	Func	Projection that may return `null`.

Returns: IObservable -- An observable that emits only non-null projected values.