Method Do

Do<TSource>(IAsyncEnumerable<TSource>, Action<TSource>)

Lazily invokes an action for each value in the sequence.

Declaration

public static IAsyncEnumerable<TSource> Do<TSource>(this IAsyncEnumerable<TSource> source, Action<TSource> onNext)

Parameters

Type	Name	Description
IAsyncEnumerable<TSource>	source	Source sequence.
Action<TSource>	onNext	Action to invoke for each element.

Returns

Type	Description
IAsyncEnumerable<TSource>	Sequence exhibiting the specified side-effects upon enumeration.

Type Parameters

Name	Description
TSource	Source sequence element type.

Remarks

This method uses deferred execution and streams its results.

Exceptions

Type	Condition
ArgumentNullException	source or onNext is null.

Do<TSource>(IAsyncEnumerable<TSource>, Func<TSource, ValueTask>)

Lazily invokes an action for each value in the sequence.

Declaration

public static IAsyncEnumerable<TSource> Do<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask> onNext)

Parameters

Type	Name	Description
IAsyncEnumerable<TSource>	source	Source sequence.
Func<TSource, ValueTask>	onNext	Action to invoke for each element.

Returns

Type	Description
IAsyncEnumerable<TSource>	Sequence exhibiting the specified side-effects upon enumeration.

Type Parameters

Name	Description
TSource	Source sequence element type.

Remarks

This method uses deferred execution and streams its results.

Exceptions

Type	Condition
ArgumentNullException	source or onNext is null.

Do<TSource>(IAsyncEnumerable<TSource>, Action<TSource>, Action)

Lazily invokes an action for each value in the sequence, and executes an action for successful termination.

Declaration

public static IAsyncEnumerable<TSource> Do<TSource>(this IAsyncEnumerable<TSource> source, Action<TSource> onNext, Action onCompleted)

Parameters

Type	Name	Description
IAsyncEnumerable<TSource>	source	Source sequence.
Action<TSource>	onNext	Action to invoke for each element.
Action	onCompleted	Action to invoke on successful termination of the sequence.

Returns

Type	Description
IAsyncEnumerable<TSource>	Sequence exhibiting the specified side-effects upon enumeration.

Type Parameters

Name	Description
TSource	Source sequence element type.

Remarks

This method uses deferred execution and streams its results.

Exceptions

Type	Condition
ArgumentNullException	source, onNext, or onCompleted is null.

Do<TSource>(IAsyncEnumerable<TSource>, Func<TSource, ValueTask>, Func<ValueTask>)

Lazily invokes an action for each value in the sequence, and executes an action for successful termination.

Declaration

public static IAsyncEnumerable<TSource> Do<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask> onNext, Func<ValueTask> onCompleted)

Parameters

Type	Name	Description
IAsyncEnumerable<TSource>	source	Source sequence.
Func<TSource, ValueTask>	onNext	Action to invoke for each element.
Func<ValueTask>	onCompleted	Action to invoke on successful termination of the sequence.

Returns

Type	Description
IAsyncEnumerable<TSource>	Sequence exhibiting the specified side-effects upon enumeration.

Type Parameters

Name	Description
TSource	Source sequence element type.

Remarks

This method uses deferred execution and streams its results.

Exceptions

Type	Condition
ArgumentNullException	source, onNext, or onCompleted is null.

Do<TSource>(IAsyncEnumerable<TSource>, Action<TSource>, Action<Exception>)

Lazily invokes an action for each value in the sequence, and executes an action upon exceptional termination.

Declaration

public static IAsyncEnumerable<TSource> Do<TSource>(this IAsyncEnumerable<TSource> source, Action<TSource> onNext, Action<Exception> onError)

Parameters

Type	Name	Description
IAsyncEnumerable<TSource>	source	Source sequence.
Action<TSource>	onNext	Action to invoke for each element.
Action<Exception>	onError	Action to invoke on exceptional termination of the sequence.

Returns

Type	Description
IAsyncEnumerable<TSource>	Sequence exhibiting the specified side-effects upon enumeration.

Type Parameters

Name	Description
TSource	Source sequence element type.

Remarks

This method uses deferred execution and streams its results.

Exceptions

Type	Condition
ArgumentNullException	source, onNext, or onError is null.

Do<TSource>(IAsyncEnumerable<TSource>, Func<TSource, ValueTask>, Func<Exception, ValueTask>)

Lazily invokes an action for each value in the sequence, and executes an action upon exceptional termination.

Declaration

public static IAsyncEnumerable<TSource> Do<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask> onNext, Func<Exception, ValueTask> onError)

Parameters

Type	Name	Description
IAsyncEnumerable<TSource>	source	Source sequence.
Func<TSource, ValueTask>	onNext	Action to invoke for each element.
Func<Exception, ValueTask>	onError	Action to invoke on exceptional termination of the sequence.

Returns

Type	Description
IAsyncEnumerable<TSource>	Sequence exhibiting the specified side-effects upon enumeration.

Type Parameters

Name	Description
TSource	Source sequence element type.

Remarks

This method uses deferred execution and streams its results.

Exceptions

Type	Condition
ArgumentNullException	source, onNext, or onError is null.

Do<TSource>(IAsyncEnumerable<TSource>, Action<TSource>, Action<Exception>, Action)

Lazily invokes an action for each value in the sequence, and executes an action upon successful or exceptional termination.

Declaration

public static IAsyncEnumerable<TSource> Do<TSource>(this IAsyncEnumerable<TSource> source, Action<TSource> onNext, Action<Exception> onError, Action onCompleted)

Parameters

Type	Name	Description
IAsyncEnumerable<TSource>	source	Source sequence.
Action<TSource>	onNext	Action to invoke for each element.
Action<Exception>	onError	Action to invoke on exceptional termination of the sequence.
Action	onCompleted	Action to invoke on successful termination of the sequence.

Returns

Type	Description
IAsyncEnumerable<TSource>	Sequence exhibiting the specified side-effects upon enumeration.

Type Parameters

Name	Description
TSource	Source sequence element type.

Remarks

This method uses deferred execution and streams its results.

Exceptions

Type	Condition
ArgumentNullException	source, onNext onError, or onCompleted is null.

Do<TSource>(IAsyncEnumerable<TSource>, Func<TSource, ValueTask>, Func<Exception, ValueTask>, Func<ValueTask>)

Lazily invokes an action for each value in the sequence, and executes an action upon successful or exceptional termination.

Declaration

public static IAsyncEnumerable<TSource> Do<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask> onNext, Func<Exception, ValueTask> onError, Func<ValueTask> onCompleted)

Parameters

Type	Name	Description
IAsyncEnumerable<TSource>	source	Source sequence.
Func<TSource, ValueTask>	onNext	Action to invoke for each element.
Func<Exception, ValueTask>	onError	Action to invoke on exceptional termination of the sequence.
Func<ValueTask>	onCompleted	Action to invoke on successful termination of the sequence.

Returns

Type	Description
IAsyncEnumerable<TSource>	Sequence exhibiting the specified side-effects upon enumeration.

Type Parameters

Name	Description
TSource	Source sequence element type.

Remarks

This method uses deferred execution and streams its results.

Exceptions

Type	Condition
ArgumentNullException	source, onNext onError, or onCompleted is null.