AsyncEnumerable.ToDictionaryAsync Method (System.Linq) (original) (raw)
Definition
Overloads
ToDictionaryAsync<TKey,TValue>(IAsyncEnumerable<KeyValuePair<TKey,TValue>>, IEqualityComparer, CancellationToken)
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public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TValue>> ToDictionaryAsync<TKey,TValue>(this System.Collections.Generic.IAsyncEnumerable<System.Collections.Generic.KeyValuePair<TKey,TValue>> source, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<System.Collections.Generic.KeyValuePair<'Key, 'Value>> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Value>><Extension()>
Public Function ToDictionaryAsync(Of TKey, TValue) (source As IAsyncEnumerable(Of KeyValuePair(Of TKey, TValue)), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TValue))Type Parameters
TKey
The type of the keys from elements of source
TValue
The type of the values from elements of source
Parameters
Returns
A Dictionary<TKey,TValue> that contains keys and values from source.
Exceptions
source contains one or more duplicate keys (via the returned task).
Applies to
ToDictionaryAsync<TKey,TValue>(IAsyncEnumerable<ValueTuple<TKey,TValue>>, IEqualityComparer, CancellationToken)
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public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TValue>> ToDictionaryAsync<TKey,TValue>(this System.Collections.Generic.IAsyncEnumerable<(TKey Key, TValue Value)> source, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<ValueTuple<'Key, 'Value>> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Value>><Extension()>
Public Function ToDictionaryAsync(Of TKey, TValue) (source As IAsyncEnumerable(Of ValueTuple(Of TKey, TValue)), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TValue))Type Parameters
TKey
The type of the keys from elements of source
TValue
The type of the values from elements of source
Parameters
Returns
A Dictionary<TKey,TValue> that contains keys and values from source.
Exceptions
source contains one or more duplicate keys (via the returned task).
Applies to
ToDictionaryAsync<TSource,TKey,TElement>(IAsyncEnumerable, Func<TSource,CancellationToken,ValueTask>, Func<TSource, CancellationToken,ValueTask>, IEqualityComparer, CancellationToken)
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public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TElement>> ToDictionaryAsync<TSource,TKey,TElement>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask<TKey>> keySelector, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask<TElement>> elementSelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask<'Key>> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask<'Element>> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Element>><Extension()>
Public Function ToDictionaryAsync(Of TSource, TKey, TElement) (source As IAsyncEnumerable(Of TSource), keySelector As Func(Of TSource, CancellationToken, ValueTask(Of TKey)), elementSelector As Func(Of TSource, CancellationToken, ValueTask(Of TElement)), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TElement))Type Parameters
TSource
The type of the elements of source.
TKey
The type of the key returned by keySelector.
TElement
The type of the value returned by elementSelector.
Parameters
Returns
A Dictionary<TKey,TValue> that contains values of type TElement selected from the input sequence.
Exceptions
source contains one or more duplicate keys (via the returned task).
Applies to
ToDictionaryAsync<TSource,TKey,TElement>(IAsyncEnumerable, Func<TSource,TKey>, Func<TSource,TElement>, IEqualityComparer, CancellationToken)
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public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TElement>> ToDictionaryAsync<TSource,TKey,TElement>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, 'Key> * Func<'Source, 'Element> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Element>><Extension()>
Public Function ToDictionaryAsync(Of TSource, TKey, TElement) (source As IAsyncEnumerable(Of TSource), keySelector As Func(Of TSource, TKey), elementSelector As Func(Of TSource, TElement), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TElement))Type Parameters
TSource
The type of the elements of source.
TKey
The type of the key returned by keySelector.
TElement
The type of the value returned by elementSelector.
Parameters
keySelector
Func<TSource,TKey>
A function to extract a key from each element.
elementSelector
Func<TSource,TElement>
A transform function to produce a result element value from each element.
Returns
A Dictionary<TKey,TValue> that contains values of type TElement selected from the input sequence.
Exceptions
source contains one or more duplicate keys (via the returned task).
Applies to
ToDictionaryAsync<TSource,TKey>(IAsyncEnumerable, Func<TSource, CancellationToken,ValueTask>, IEqualityComparer, CancellationToken)
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public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TSource>> ToDictionaryAsync<TSource,TKey>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,System.Threading.CancellationToken,System.Threading.Tasks.ValueTask<TKey>> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, System.Threading.CancellationToken, System.Threading.Tasks.ValueTask<'Key>> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Source>><Extension()>
Public Function ToDictionaryAsync(Of TSource, TKey) (source As IAsyncEnumerable(Of TSource), keySelector As Func(Of TSource, CancellationToken, ValueTask(Of TKey)), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TSource))Type Parameters
TSource
The type of the elements of source.
TKey
The type of the keys returned by keySelector.
Parameters
Returns
A Dictionary<TKey,TValue> that contains keys and values.
Exceptions
source contains one or more duplicate keys (via the returned task).
Applies to
ToDictionaryAsync<TSource,TKey>(IAsyncEnumerable, Func<TSource,TKey>, IEqualityComparer, CancellationToken)
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public static System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<TKey,TSource>> ToDictionaryAsync<TSource,TKey>(this System.Collections.Generic.IAsyncEnumerable<TSource> source, Func<TSource,TKey> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer = default, System.Threading.CancellationToken cancellationToken = default);static member ToDictionaryAsync : System.Collections.Generic.IAsyncEnumerable<'Source> * Func<'Source, 'Key> * System.Collections.Generic.IEqualityComparer<'Key> * System.Threading.CancellationToken -> System.Threading.Tasks.ValueTask<System.Collections.Generic.Dictionary<'Key, 'Source>><Extension()>
Public Function ToDictionaryAsync(Of TSource, TKey) (source As IAsyncEnumerable(Of TSource), keySelector As Func(Of TSource, TKey), Optional comparer As IEqualityComparer(Of TKey) = Nothing, Optional cancellationToken As CancellationToken = Nothing) As ValueTask(Of Dictionary(Of TKey, TSource))Type Parameters
TSource
The type of the elements of source.
TKey
The type of the keys returned by keySelector.
Parameters
keySelector
Func<TSource,TKey>
A function to extract a key from each element.
Returns
A Dictionary<TKey,TValue> that contains keys and values.
Exceptions
source contains one or more duplicate keys (via the returned task).