Method ScanRight
ScanRight<TSource>(IAsyncEnumerable<TSource>, Func<TSource, TSource, TSource>)
Performs a right-associative scan (inclusive prefix) on a sequence of elements. This operator is the right-associative version of the Scan<TSource>(IAsyncEnumerable<TSource>, Func<TSource, TSource, TSource>) LINQ operator.
Declaration
public static IAsyncEnumerable<TSource> ScanRight<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, TSource> func)Parameters
| Type | Name | Description |
|---|---|---|
| IAsyncEnumerable<TSource> | source | Source sequence. |
| Func<TSource, TSource, TSource> | func | A right-associative accumulator function to be invoked on each element. Its first argument is the current value in the sequence; second argument is the previous accumulator value. |
Returns
| Type | Description |
|---|---|
| IAsyncEnumerable<TSource> | The scanned sequence. |
Type Parameters
| Name | Description |
|---|---|
| TSource | Type of elements in source sequence. |
Remarks
This operator uses deferred execution and streams its results. Source sequence is consumed greedily when an iteration of the resulting sequence begins.
Examples
var result = Enumerable.Range(1, 5).Select(i => i.ToString()).ScanRight((a, b) => $"({a}+{b})");The result variable will contain [ "(1+(2+(3+(4+5))))", "(2+(3+(4+5)))", "(3+(4+5))", "(4+5)", "5" ].
Exceptions
| Type | Condition |
|---|---|
| ArgumentNullException |
|
| ArgumentNullException |
|
ScanRight<TSource>(IAsyncEnumerable<TSource>, Func<TSource, TSource, ValueTask<TSource>>)
Performs a right-associative scan (inclusive prefix) on a sequence of elements. This operator is the right-associative version of the Scan<TSource>(IAsyncEnumerable<TSource>, Func<TSource, TSource, TSource>) LINQ operator.
Declaration
public static IAsyncEnumerable<TSource> ScanRight<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, ValueTask<TSource>> func)Parameters
| Type | Name | Description |
|---|---|---|
| IAsyncEnumerable<TSource> | source | Source sequence. |
| Func<TSource, TSource, ValueTask<TSource>> | func | A right-associative accumulator function to be invoked on each element. Its first argument is the current value in the sequence; second argument is the previous accumulator value. |
Returns
| Type | Description |
|---|---|
| IAsyncEnumerable<TSource> | The scanned sequence. |
Type Parameters
| Name | Description |
|---|---|
| TSource | Type of elements in source sequence. |
Remarks
This operator uses deferred execution and streams its results. Source sequence is consumed greedily when an iteration of the resulting sequence begins.
Examples
var result = Enumerable.Range(1, 5).Select(i => i.ToString()).ScanRight((a, b) => $"({a}+{b})");The result variable will contain [ "(1+(2+(3+(4+5))))", "(2+(3+(4+5)))", "(3+(4+5))", "(4+5)", "5" ].
Exceptions
| Type | Condition |
|---|---|
| ArgumentNullException |
|
| ArgumentNullException |
|
ScanRight<TSource>(IAsyncEnumerable<TSource>, Func<TSource, TSource, CancellationToken, ValueTask<TSource>>)
Performs a right-associative scan (inclusive prefix) on a sequence of elements. This operator is the right-associative version of the Scan<TSource>(IAsyncEnumerable<TSource>, Func<TSource, TSource, TSource>) LINQ operator.
Declaration
public static IAsyncEnumerable<TSource> ScanRight<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, CancellationToken, ValueTask<TSource>> func)Parameters
| Type | Name | Description |
|---|---|---|
| IAsyncEnumerable<TSource> | source | Source sequence. |
| Func<TSource, TSource, CancellationToken, ValueTask<TSource>> | func | A right-associative accumulator function to be invoked on each element. Its first argument is the current value in the sequence; second argument is the previous accumulator value. |
Returns
| Type | Description |
|---|---|
| IAsyncEnumerable<TSource> | The scanned sequence. |
Type Parameters
| Name | Description |
|---|---|
| TSource | Type of elements in source sequence. |
Remarks
This operator uses deferred execution and streams its results. Source sequence is consumed greedily when an iteration of the resulting sequence begins.
Examples
var result = Enumerable.Range(1, 5).Select(i => i.ToString()).ScanRight((a, b) => $"({a}+{b})");The result variable will contain [ "(1+(2+(3+(4+5))))", "(2+(3+(4+5)))", "(3+(4+5))", "(4+5)", "5" ].
Exceptions
| Type | Condition |
|---|---|
| ArgumentNullException |
|
| ArgumentNullException |
|
ScanRight<TSource, TAccumulate>(IAsyncEnumerable<TSource>, TAccumulate, Func<TSource, TAccumulate, TAccumulate>)
Performs a right-associative scan (inclusive prefix) on a sequence of elements. The specified seed value is used as the initial accumulator value. This operator is the right-associative version of the Scan<TSource, TState>(IAsyncEnumerable<TSource>, TState, Func<TState, TSource, TState>) LINQ operator.
Declaration
public static IAsyncEnumerable<TAccumulate> ScanRight<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TSource, TAccumulate, TAccumulate> func)Parameters
| Type | Name | Description |
|---|---|---|
| IAsyncEnumerable<TSource> | source | Source sequence. |
| TAccumulate | seed | The initial accumulator value. |
| Func<TSource, TAccumulate, TAccumulate> | func | A right-associative accumulator function to be invoked on each element. |
Returns
| Type | Description |
|---|---|
| IAsyncEnumerable<TAccumulate> | The scanned sequence. |
Type Parameters
| Name | Description |
|---|---|
| TSource | The type of the elements of source. |
| TAccumulate | The type of the accumulator value. |
Remarks
This operator uses deferred execution and streams its results. Source sequence is consumed greedily when an iteration of the resulting sequence begins.
Examples
var result = Enumerable.Range(1, 4).ScanRight("5", (a, b) => string.Format("({0}/{1})", a, b));The result variable will contain [ "(1+(2+(3+(4+5))))", "(2+(3+(4+5)))", "(3+(4+5))", "(4+5)", "5" ].
Exceptions
| Type | Condition |
|---|---|
| ArgumentNullException |
|
| ArgumentNullException |
|
| ArgumentNullException |
|
ScanRight<TSource, TAccumulate>(IAsyncEnumerable<TSource>, TAccumulate, Func<TSource, TAccumulate, ValueTask<TAccumulate>>)
Performs a right-associative scan (inclusive prefix) on a sequence of elements. The specified seed value is used as the initial accumulator value. This operator is the right-associative version of the Scan<TSource, TState>(IAsyncEnumerable<TSource>, TState, Func<TState, TSource, TState>) LINQ operator.
Declaration
public static IAsyncEnumerable<TAccumulate> ScanRight<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TSource, TAccumulate, ValueTask<TAccumulate>> func)Parameters
| Type | Name | Description |
|---|---|---|
| IAsyncEnumerable<TSource> | source | Source sequence. |
| TAccumulate | seed | The initial accumulator value. |
| Func<TSource, TAccumulate, ValueTask<TAccumulate>> | func | A right-associative accumulator function to be invoked on each element. |
Returns
| Type | Description |
|---|---|
| IAsyncEnumerable<TAccumulate> | The scanned sequence. |
Type Parameters
| Name | Description |
|---|---|
| TSource | The type of the elements of source. |
| TAccumulate | The type of the accumulator value. |
Remarks
This operator uses deferred execution and streams its results. Source sequence is consumed greedily when an iteration of the resulting sequence begins.
Examples
var result = Enumerable.Range(1, 4).ScanRight("5", (a, b) => string.Format("({0}/{1})", a, b));The result variable will contain [ "(1+(2+(3+(4+5))))", "(2+(3+(4+5)))", "(3+(4+5))", "(4+5)", "5" ].
Exceptions
| Type | Condition |
|---|---|
| ArgumentNullException |
|
| ArgumentNullException |
|
| ArgumentNullException |
|
ScanRight<TSource, TAccumulate>(IAsyncEnumerable<TSource>, TAccumulate, Func<TSource, TAccumulate, CancellationToken, ValueTask<TAccumulate>>)
Performs a right-associative scan (inclusive prefix) on a sequence of elements. The specified seed value is used as the initial accumulator value. This operator is the right-associative version of the Scan<TSource, TState>(IAsyncEnumerable<TSource>, TState, Func<TState, TSource, TState>) LINQ operator.
Declaration
public static IAsyncEnumerable<TAccumulate> ScanRight<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TSource, TAccumulate, CancellationToken, ValueTask<TAccumulate>> func)Parameters
| Type | Name | Description |
|---|---|---|
| IAsyncEnumerable<TSource> | source | Source sequence. |
| TAccumulate | seed | The initial accumulator value. |
| Func<TSource, TAccumulate, CancellationToken, ValueTask<TAccumulate>> | func | A right-associative accumulator function to be invoked on each element. |
Returns
| Type | Description |
|---|---|
| IAsyncEnumerable<TAccumulate> | The scanned sequence. |
Type Parameters
| Name | Description |
|---|---|
| TSource | The type of the elements of source. |
| TAccumulate | The type of the accumulator value. |
Remarks
This operator uses deferred execution and streams its results. Source sequence is consumed greedily when an iteration of the resulting sequence begins.
Examples
var result = Enumerable.Range(1, 4).ScanRight("5", (a, b) => string.Format("({0}/{1})", a, b));The result variable will contain [ "(1+(2+(3+(4+5))))", "(2+(3+(4+5)))", "(3+(4+5))", "(4+5)", "5" ].
Exceptions
| Type | Condition |
|---|---|
| ArgumentNullException |
|
| ArgumentNullException |
|
| ArgumentNullException |
|