Observable.filter<'T> Function (F#)
Returns an observable which filters the observations of the source by the given function. The observable will see only those observations for which the predicate returns true. The predicate is executed once for each subscribed observer. The returned object also propagates error observations arising from the source and completes when the source completes.
Namespace/Module Path: Microsoft.FSharp.Control.Observable
Assembly: FSharp.Core (in FSharp.Core.dll)
// Signature:
Observable.filter : ('T -> bool) -> IObservable<'T> -> IObservable<'T>
// Usage:
Observable.filter predicate source
Parameters
predicate
Type: 'T -> boolThe function to apply to observations to determine if it should be kept.
source
Type: IObservable<'T>The input Observable.
Return Value
An Observable that filters observations based on filter.
Remarks
This function is named Filter in compiled assemblies. If you are accessing the function from a language other than F#, or through reflection, use this name.
Platforms
Windows 7, Windows Vista SP2, Windows XP SP3, Windows XP x64 SP2, Windows Server 2008 R2, Windows Server 2008 SP2, Windows Server 2003 SP2
Version Information
F# Runtime
Supported in: 2.0, 4.0
Silverlight
Supported in: 3