Class CountEx

Namespace

DynamicData.Aggregation

Assembly

DynamicData.dll

Count extensions.

public static class CountEx

Inheritance

object

CountEx

Methods

Count<TObject>(IObservable<IAggregateChangeSet<TObject>>)

Counts the total number of items in the underlying data source.

public static IObservable<int> Count<TObject>(this IObservable<IAggregateChangeSet<TObject>> source)

Parameters

source IObservable<IAggregateChangeSet<TObject>>

The source.

Returns

IObservable<int>

An observable which emits the count.

Type Parameters

TObject

The type of the object.

Count<TObject>(IObservable<IChangeSet<TObject>>)

Counts the total number of items in the underlying data source.

public static IObservable<int> Count<TObject>(this IObservable<IChangeSet<TObject>> source) where TObject : notnull

Parameters

source IObservable<IChangeSet<TObject>>

The source.

Returns

IObservable<int>

An observable which emits the count.

Type Parameters

TObject

The type of the object.

Count<TObject>(IObservable<IDistinctChangeSet<TObject>>)

Counts the total number of items in the underlying data source.

public static IObservable<int> Count<TObject>(this IObservable<IDistinctChangeSet<TObject>> source) where TObject : notnull

Parameters

source IObservable<IDistinctChangeSet<TObject>>

The source.

Returns

IObservable<int>

An observable which emits the count.

Type Parameters

TObject

The type of the object.

Count<TObject, TKey>(IObservable<IChangeSet<TObject, TKey>>)

Counts the total number of items in the underlying data source.

public static IObservable<int> Count<TObject, TKey>(this IObservable<IChangeSet<TObject, TKey>> source) where TObject : notnull where TKey : notnull

Parameters

source IObservable<IChangeSet<TObject, TKey>>

The source.

Returns

IObservable<int>

An observable which emits the count.

Type Parameters

TObject

The type of the object.

TKey

The type of the key.

IsEmpty<TObject>(IObservable<IChangeSet<TObject>>)

Counts the total number of items in the underlying data source and return true if the number of items == 0.

public static IObservable<bool> IsEmpty<TObject>(this IObservable<IChangeSet<TObject>> source) where TObject : notnull

Parameters

source IObservable<IChangeSet<TObject>>

The source.

Returns

IObservable<bool>

An observable which emits the count.

Type Parameters

TObject

The type of the object.

IsEmpty<TObject, TKey>(IObservable<IChangeSet<TObject, TKey>>)

Counts the total number of items in the underlying data source and return true if the number of items == 0.

public static IObservable<bool> IsEmpty<TObject, TKey>(this IObservable<IChangeSet<TObject, TKey>> source) where TObject : notnull where TKey : notnull

Parameters

source IObservable<IChangeSet<TObject, TKey>>

The source.

Returns

IObservable<bool>

An observable which emits the count.

Type Parameters

TObject

The type of the object.

TKey

The type of the key.

IsNotEmpty<TObject>(IObservable<IChangeSet<TObject>>)

Counts the total number of items in the underlying data source and returns true if the number of items is greater than 0.

public static IObservable<bool> IsNotEmpty<TObject>(this IObservable<IChangeSet<TObject>> source) where TObject : notnull

Parameters

source IObservable<IChangeSet<TObject>>

The source.

Returns

IObservable<bool>

An observable which emits the count.

Type Parameters

TObject

The type of the object.

IsNotEmpty<TObject, TKey>(IObservable<IChangeSet<TObject, TKey>>)

Counts the total number of items in the underlying data source and returns true if the number of items is greater than 0.

public static IObservable<bool> IsNotEmpty<TObject, TKey>(this IObservable<IChangeSet<TObject, TKey>> source) where TObject : notnull where TKey : notnull

Parameters

source IObservable<IChangeSet<TObject, TKey>>

The source.

Returns

IObservable<bool>

An observable which emits the count.

Type Parameters

TObject

The type of the object.

TKey

The type of the key.