Enumerable.ExceptBy Method
Definition
Important
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Overloads
| ExceptBy<TSource,TKey>(IEnumerable<TSource>, IEnumerable<TKey>, Func<TSource,TKey>) |
Produces the set difference of two sequences according to a specified key selector function. |
| ExceptBy<TSource,TKey>(IEnumerable<TSource>, IEnumerable<TKey>, Func<TSource,TKey>, IEqualityComparer<TKey>) |
Produces the set difference of two sequences according to a specified key selector function. |
ExceptBy<TSource,TKey>(IEnumerable<TSource>, IEnumerable<TKey>, Func<TSource,TKey>)
- Source:
- Except.cs
- Source:
- Except.cs
- Source:
- Except.cs
Produces the set difference of two sequences according to a specified key selector function.
public:
generic <typename TSource, typename TKey>
[System::Runtime::CompilerServices::Extension]
static System::Collections::Generic::IEnumerable<TSource> ^ ExceptBy(System::Collections::Generic::IEnumerable<TSource> ^ first, System::Collections::Generic::IEnumerable<TKey> ^ second, Func<TSource, TKey> ^ keySelector);public static System.Collections.Generic.IEnumerable<TSource> ExceptBy<TSource,TKey> (this System.Collections.Generic.IEnumerable<TSource> first, System.Collections.Generic.IEnumerable<TKey> second, Func<TSource,TKey> keySelector);static member ExceptBy : seq<'Source> * seq<'Key> * Func<'Source, 'Key> -> seq<'Source><Extension()>
Public Function ExceptBy(Of TSource, TKey) (first As IEnumerable(Of TSource), second As IEnumerable(Of TKey), keySelector As Func(Of TSource, TKey)) As IEnumerable(Of TSource)Type Parameters
- TSource
The type of the elements of the input sequence.
- TKey
The type of key to identify elements by.
Parameters
- first
- IEnumerable<TSource>
An IEnumerable<T> whose keys that are not also in second will be returned.
- second
- IEnumerable<TKey>
An IEnumerable<T> whose keys that also occur in the first sequence will cause those elements to be removed from the returned sequence.
- keySelector
- Func<TSource,TKey>
A function to extract the key for each element.
Returns
A sequence that contains the set difference of the elements of two sequences.
See also
Applies to
ExceptBy<TSource,TKey>(IEnumerable<TSource>, IEnumerable<TKey>, Func<TSource,TKey>, IEqualityComparer<TKey>)
- Source:
- Except.cs
- Source:
- Except.cs
- Source:
- Except.cs
Produces the set difference of two sequences according to a specified key selector function.
public:
generic <typename TSource, typename TKey>
[System::Runtime::CompilerServices::Extension]
static System::Collections::Generic::IEnumerable<TSource> ^ ExceptBy(System::Collections::Generic::IEnumerable<TSource> ^ first, System::Collections::Generic::IEnumerable<TKey> ^ second, Func<TSource, TKey> ^ keySelector, System::Collections::Generic::IEqualityComparer<TKey> ^ comparer);public static System.Collections.Generic.IEnumerable<TSource> ExceptBy<TSource,TKey> (this System.Collections.Generic.IEnumerable<TSource> first, System.Collections.Generic.IEnumerable<TKey> second, Func<TSource,TKey> keySelector, System.Collections.Generic.IEqualityComparer<TKey>? comparer);static member ExceptBy : seq<'Source> * seq<'Key> * Func<'Source, 'Key> * System.Collections.Generic.IEqualityComparer<'Key> -> seq<'Source><Extension()>
Public Function ExceptBy(Of TSource, TKey) (first As IEnumerable(Of TSource), second As IEnumerable(Of TKey), keySelector As Func(Of TSource, TKey), comparer As IEqualityComparer(Of TKey)) As IEnumerable(Of TSource)Type Parameters
- TSource
The type of the elements of the input sequence.
- TKey
The type of key to identify elements by.
Parameters
- first
- IEnumerable<TSource>
An IEnumerable<T> whose keys that are not also in second will be returned.
- second
- IEnumerable<TKey>
An IEnumerable<T> whose keys that also occur in the first sequence will cause those elements to be removed from the returned sequence.
- keySelector
- Func<TSource,TKey>
A function to extract the key for each element.
- comparer
- IEqualityComparer<TKey>
The IEqualityComparer<T> to compare values.
Returns
A sequence that contains the set difference of the elements of two sequences.
