class Enumerable

in global :: System . Linq

Provides a set of ( in Visual Basic) methods for querying objects that implement .

public static IEnumerable<int> Range( int start, int count )

Generates a sequence of integral numbers within a specified range.

  • start The value of the first integer in the sequence.
  • count The number of sequential integers to generate.
  • Returns An IEnumerable<Int32> in C# or IEnumerable(Of Int32) in Visual Basic that contains a range of sequential integral numbers.

public static IOrderedEnumerable<T> Order( IEnumerable<T> source, IComparer<T> comparer )

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public static IOrderedEnumerable<TSource> OrderBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static IOrderedEnumerable<TSource> OrderBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IComparer<TKey> comparer )

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public static IOrderedEnumerable<T> OrderDescending( IEnumerable<T> source )

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public static IOrderedEnumerable<T> OrderDescending( IEnumerable<T> source, IComparer<T> comparer )

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public static IOrderedEnumerable<TSource> OrderByDescending( IEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static IOrderedEnumerable<TSource> OrderByDescending( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IComparer<TKey> comparer )

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public static IOrderedEnumerable<TSource> ThenBy( IOrderedEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static IOrderedEnumerable<TSource> ThenBy( IOrderedEnumerable<TSource> source, Func<TSource,TKey> keySelector, IComparer<TKey> comparer )

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public static IOrderedEnumerable<TSource> ThenByDescending( IOrderedEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static IOrderedEnumerable<TSource> ThenByDescending( IOrderedEnumerable<TSource> source, Func<TSource,TKey> keySelector, IComparer<TKey> comparer )

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public static IOrderedEnumerable<T> Order( IEnumerable<T> source )

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public static TSource SingleOrDefault( IEnumerable<TSource> source )

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public static IEnumerable<TSource> Reverse( IEnumerable<TSource> source )

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public static IEnumerable<TResult> Select( IEnumerable<TSource> source, Func<TSource,TResult> selector )

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public static IEnumerable<TResult> Select( IEnumerable<TSource> source, Func<TSource,int,TResult> selector )

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public static IEnumerable<TResult> SelectMany( IEnumerable<TSource> source, Func<TSource,IEnumerable<TResult>> selector )

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public static IEnumerable<TResult> SelectMany( IEnumerable<TSource> source, Func<TSource,int,IEnumerable<TResult>> selector )

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public static IEnumerable<TResult> SelectMany( IEnumerable<TSource> source, Func<TSource,int,IEnumerable<TCollection>> collectionSelector, Func<TSource,TCollection,TResult> resultSelector )

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public static IEnumerable<TResult> SelectMany( IEnumerable<TSource> source, Func<TSource,IEnumerable<TCollection>> collectionSelector, Func<TSource,TCollection,TResult> resultSelector )

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public static bool SequenceEqual( IEnumerable<TSource> first, IEnumerable<TSource> second )

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public static bool SequenceEqual( IEnumerable<TSource> first, IEnumerable<TSource> second, IEqualityComparer<TSource> comparer )

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public static TSource Single( IEnumerable<TSource> source )

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public static TSource Single( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static IEnumerable<TResult> Repeat( TResult element, int count )

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public static Nullable<decimal> Max( IEnumerable<TSource> source, Func<TSource,Nullable<decimal>> selector )

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public static IEnumerable<TResult> OfType( IEnumerable source )

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public static decimal Max( IEnumerable<TSource> source, Func<TSource,decimal> selector )

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public static TResult Max( IEnumerable<TSource> source, Func<TSource,TResult> selector )

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public static int Min( IEnumerable<int> source )

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public static long Min( IEnumerable<long> source )

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public static Nullable<int> Min( IEnumerable<Nullable<int>> source )

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public static Nullable<long> Min( IEnumerable<Nullable<long>> source )

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public static float Min( IEnumerable<float> source )

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public static Nullable<float> Min( IEnumerable<Nullable<float>> source )

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public static double Min( IEnumerable<double> source )

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public static Nullable<double> Min( IEnumerable<Nullable<double>> source )

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public static decimal Min( IEnumerable<decimal> source )

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public static Nullable<decimal> Min( IEnumerable<Nullable<decimal>> source )

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public static TResult Min( IEnumerable<TSource> source, Func<TSource,TResult> selector )

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public static TSource Min( IEnumerable<TSource> source )

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public static TSource MinBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static TSource MinBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IComparer<TKey> comparer )

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public static int Min( IEnumerable<TSource> source, Func<TSource,int> selector )

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public static Nullable<int> Min( IEnumerable<TSource> source, Func<TSource,Nullable<int>> selector )

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public static long Min( IEnumerable<TSource> source, Func<TSource,long> selector )

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public static Nullable<long> Min( IEnumerable<TSource> source, Func<TSource,Nullable<long>> selector )

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public static float Min( IEnumerable<TSource> source, Func<TSource,float> selector )

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public static Nullable<float> Min( IEnumerable<TSource> source, Func<TSource,Nullable<float>> selector )

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public static double Min( IEnumerable<TSource> source, Func<TSource,double> selector )

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public static Nullable<double> Min( IEnumerable<TSource> source, Func<TSource,Nullable<double>> selector )

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public static decimal Min( IEnumerable<TSource> source, Func<TSource,decimal> selector )

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public static TSource Min( IEnumerable<TSource> source, IComparer<TSource> comparer )

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public static Nullable<decimal> Min( IEnumerable<TSource> source, Func<TSource,Nullable<decimal>> selector )

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public static TSource SingleOrDefault( IEnumerable<TSource> source, TSource defaultValue )

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public static TSource SingleOrDefault( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static IEnumerable<TSource> TakeLast( IEnumerable<TSource> source, int count )

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public static TSource[] ToArray( IEnumerable<TSource> source )

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public static List<TSource> ToList( IEnumerable<TSource> source )

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public static Dictionary<TKey,TValue> ToDictionary( IEnumerable<KeyValuePair<TKey,TValue>> source )

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public static Dictionary<TKey,TValue> ToDictionary( IEnumerable<KeyValuePair<TKey,TValue>> source, IEqualityComparer<TKey> comparer )

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public static Dictionary<TKey,TValue> ToDictionary( IEnumerable<ValueTuple<TKey,TValue>> source )

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public static Dictionary<TKey,TValue> ToDictionary( IEnumerable<ValueTuple<TKey,TValue>> source, IEqualityComparer<TKey> comparer )

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public static Dictionary<TKey,TSource> ToDictionary( IEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static Dictionary<TKey,TSource> ToDictionary( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IEqualityComparer<TKey> comparer )

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public static Dictionary<TKey,TElement> ToDictionary( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector )

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public static Dictionary<TKey,TElement> ToDictionary( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, IEqualityComparer<TKey> comparer )

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public static IEnumerable<TSource> TakeWhile( IEnumerable<TSource> source, Func<TSource,int,bool> predicate )

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public static HashSet<TSource> ToHashSet( IEnumerable<TSource> source )

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public static IEnumerable<TSource> Union( IEnumerable<TSource> first, IEnumerable<TSource> second )

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public static IEnumerable<TSource> Union( IEnumerable<TSource> first, IEnumerable<TSource> second, IEqualityComparer<TSource> comparer )

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public static IEnumerable<TSource> UnionBy( IEnumerable<TSource> first, IEnumerable<TSource> second, Func<TSource,TKey> keySelector )

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public static IEnumerable<TSource> UnionBy( IEnumerable<TSource> first, IEnumerable<TSource> second, Func<TSource,TKey> keySelector, IEqualityComparer<TKey> comparer )

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public static IEnumerable<TSource> Where( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static IEnumerable<TSource> Where( IEnumerable<TSource> source, Func<TSource,int,bool> predicate )

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public static IEnumerable<TResult> Zip( IEnumerable<TFirst> first, IEnumerable<TSecond> second, Func<TFirst,TSecond,TResult> resultSelector )

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public static IEnumerable<ValueTuple<TFirst,TSecond>> Zip( IEnumerable<TFirst> first, IEnumerable<TSecond> second )

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public static IEnumerable<ValueTuple<TFirst,TSecond,TThird>> Zip( IEnumerable<TFirst> first, IEnumerable<TSecond> second, IEnumerable<TThird> third )

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public Type GetType( )

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public string ToString( )

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public static HashSet<TSource> ToHashSet( IEnumerable<TSource> source, IEqualityComparer<TSource> comparer )

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public int GetHashCode( )

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public static IEnumerable<TSource> TakeWhile( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static TSource SingleOrDefault( IEnumerable<TSource> source, Func<TSource,bool> predicate, TSource defaultValue )

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public static IEnumerable<TSource> Skip( IEnumerable<TSource> source, int count )

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public static IEnumerable<TSource> SkipWhile( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static IEnumerable<TSource> SkipWhile( IEnumerable<TSource> source, Func<TSource,int,bool> predicate )

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public static IEnumerable<TSource> SkipLast( IEnumerable<TSource> source, int count )

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public static int Sum( IEnumerable<int> source )

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public static long Sum( IEnumerable<long> source )

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public static float Sum( IEnumerable<float> source )

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public static double Sum( IEnumerable<double> source )

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public static decimal Sum( IEnumerable<decimal> source )

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public static Nullable<int> Sum( IEnumerable<Nullable<int>> source )

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public static Nullable<long> Sum( IEnumerable<Nullable<long>> source )

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public static IEnumerable<TSource> Take( IEnumerable<TSource> source, Range range )

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public static Nullable<float> Sum( IEnumerable<Nullable<float>> source )

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public static Nullable<decimal> Sum( IEnumerable<Nullable<decimal>> source )

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public static int Sum( IEnumerable<TSource> source, Func<TSource,int> selector )

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public static long Sum( IEnumerable<TSource> source, Func<TSource,long> selector )

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public static float Sum( IEnumerable<TSource> source, Func<TSource,float> selector )

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public static double Sum( IEnumerable<TSource> source, Func<TSource,double> selector )

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public static decimal Sum( IEnumerable<TSource> source, Func<TSource,decimal> selector )

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public static Nullable<int> Sum( IEnumerable<TSource> source, Func<TSource,Nullable<int>> selector )

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public static Nullable<long> Sum( IEnumerable<TSource> source, Func<TSource,Nullable<long>> selector )

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public static Nullable<float> Sum( IEnumerable<TSource> source, Func<TSource,Nullable<float>> selector )

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public static Nullable<double> Sum( IEnumerable<TSource> source, Func<TSource,Nullable<double>> selector )

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public static Nullable<decimal> Sum( IEnumerable<TSource> source, Func<TSource,Nullable<decimal>> selector )

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public static Nullable<double> Sum( IEnumerable<Nullable<double>> source )

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public static IEnumerable<TSource> Take( IEnumerable<TSource> source, int count )

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public static Nullable<double> Max( IEnumerable<TSource> source, Func<TSource,Nullable<double>> selector )

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public static IEnumerable<TSource> Except( IEnumerable<TSource> first, IEnumerable<TSource> second )

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public static IEnumerable<TSource[]> Chunk( IEnumerable<TSource> source, int size )

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public static IEnumerable<TSource> Concat( IEnumerable<TSource> first, IEnumerable<TSource> second )

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public static bool Contains( IEnumerable<TSource> source, TSource value )

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public static bool Contains( IEnumerable<TSource> source, TSource value, IEqualityComparer<TSource> comparer )

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public static IEnumerable<KeyValuePair<TKey,TAccumulate>> AggregateBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, TAccumulate seed, Func<TAccumulate,TSource,TAccumulate> func, IEqualityComparer<TKey> keyComparer = null )

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public static IEnumerable<KeyValuePair<TKey,TAccumulate>> AggregateBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TKey,TAccumulate> seedSelector, Func<TAccumulate,TSource,TAccumulate> func, IEqualityComparer<TKey> keyComparer = null )

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public static IEnumerable<KeyValuePair<TKey,int>> CountBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IEqualityComparer<TKey> keyComparer = null )

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public static int Count( IEnumerable<TSource> source )

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public static int Count( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static bool TryGetNonEnumeratedCount( IEnumerable<TSource> source, ref int count )

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public static long LongCount( IEnumerable<TSource> source )

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public static IEnumerable<TResult> Cast( IEnumerable source )

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public static long LongCount( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static IEnumerable<TSource> DefaultIfEmpty( IEnumerable<TSource> source, TSource defaultValue )

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public static IEnumerable<TSource> Distinct( IEnumerable<TSource> source )

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public static IEnumerable<TSource> Distinct( IEnumerable<TSource> source, IEqualityComparer<TSource> comparer )

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public static IEnumerable<TSource> DistinctBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static IEnumerable<TSource> DistinctBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IEqualityComparer<TKey> comparer )

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public static TSource ElementAt( IEnumerable<TSource> source, int index )

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public static TSource ElementAt( IEnumerable<TSource> source, Index index )

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public static TSource ElementAtOrDefault( IEnumerable<TSource> source, int index )

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public static TSource ElementAtOrDefault( IEnumerable<TSource> source, Index index )

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public static IEnumerable<TSource> AsEnumerable( IEnumerable<TSource> source )

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public static IEnumerable<TResult> Empty( )

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public static IEnumerable<TSource> DefaultIfEmpty( IEnumerable<TSource> source )

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public static IEnumerable<TSource> Except( IEnumerable<TSource> first, IEnumerable<TSource> second, IEqualityComparer<TSource> comparer )

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public static Nullable<decimal> Average( IEnumerable<TSource> source, Func<TSource,Nullable<decimal>> selector )

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public static TSource Aggregate( IEnumerable<TSource> source, Func<TSource,TSource,TSource> func )

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public static TAccumulate Aggregate( IEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate,TSource,TAccumulate> func )

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public static TResult Aggregate( IEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate,TSource,TAccumulate> func, Func<TAccumulate,TResult> resultSelector )

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public static bool Any( IEnumerable<TSource> source )

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public static bool Any( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static bool All( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static IEnumerable<TSource> Append( IEnumerable<TSource> source, TSource element )

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public static IEnumerable<TSource> Prepend( IEnumerable<TSource> source, TSource element )

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public static double Average( IEnumerable<int> source )

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public static double Average( IEnumerable<long> source )

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public static float Average( IEnumerable<float> source )

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public static double Average( IEnumerable<double> source )

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public static Nullable<double> Average( IEnumerable<TSource> source, Func<TSource,Nullable<double>> selector )

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public static decimal Average( IEnumerable<decimal> source )

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public static Nullable<double> Average( IEnumerable<Nullable<long>> source )

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public static Nullable<float> Average( IEnumerable<Nullable<float>> source )

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public static Nullable<double> Average( IEnumerable<Nullable<double>> source )

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public static Nullable<decimal> Average( IEnumerable<Nullable<decimal>> source )

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public static double Average( IEnumerable<TSource> source, Func<TSource,int> selector )

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public static double Average( IEnumerable<TSource> source, Func<TSource,long> selector )

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public static float Average( IEnumerable<TSource> source, Func<TSource,float> selector )

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public static double Average( IEnumerable<TSource> source, Func<TSource,double> selector )

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public static decimal Average( IEnumerable<TSource> source, Func<TSource,decimal> selector )

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public static Nullable<double> Average( IEnumerable<TSource> source, Func<TSource,Nullable<int>> selector )

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public static Nullable<double> Average( IEnumerable<TSource> source, Func<TSource,Nullable<long>> selector )

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public static Nullable<double> Average( IEnumerable<Nullable<int>> source )

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public static Nullable<float> Average( IEnumerable<TSource> source, Func<TSource,Nullable<float>> selector )

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public static IEnumerable<TSource> ExceptBy( IEnumerable<TSource> first, IEnumerable<TKey> second, Func<TSource,TKey> keySelector )

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public static TSource LastOrDefault( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static ILookup<TKey,TSource> ToLookup( IEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static ILookup<TKey,TSource> ToLookup( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IEqualityComparer<TKey> comparer )

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public static ILookup<TKey,TElement> ToLookup( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector )

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public static ILookup<TKey,TElement> ToLookup( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, IEqualityComparer<TKey> comparer )

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public static int Max( IEnumerable<int> source )

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public static long Max( IEnumerable<long> source )

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public static Nullable<int> Max( IEnumerable<Nullable<int>> source )

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public static Nullable<long> Max( IEnumerable<Nullable<long>> source )

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public static double Max( IEnumerable<double> source )

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public static Nullable<double> Max( IEnumerable<Nullable<double>> source )

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public static float Max( IEnumerable<float> source )

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public static TSource LastOrDefault( IEnumerable<TSource> source, Func<TSource,bool> predicate, TSource defaultValue )

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public static Nullable<float> Max( IEnumerable<Nullable<float>> source )

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public static Nullable<decimal> Max( IEnumerable<Nullable<decimal>> source )

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public static TSource Max( IEnumerable<TSource> source )

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public static TSource Max( IEnumerable<TSource> source, IComparer<TSource> comparer )

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public static TSource MaxBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static TSource MaxBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IComparer<TKey> comparer )

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public static int Max( IEnumerable<TSource> source, Func<TSource,int> selector )

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public static Nullable<int> Max( IEnumerable<TSource> source, Func<TSource,Nullable<int>> selector )

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public static long Max( IEnumerable<TSource> source, Func<TSource,long> selector )

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public static Nullable<long> Max( IEnumerable<TSource> source, Func<TSource,Nullable<long>> selector )

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public static float Max( IEnumerable<TSource> source, Func<TSource,float> selector )

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public static Nullable<float> Max( IEnumerable<TSource> source, Func<TSource,Nullable<float>> selector )

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public static decimal Max( IEnumerable<decimal> source )

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public static double Max( IEnumerable<TSource> source, Func<TSource,double> selector )

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public static TSource LastOrDefault( IEnumerable<TSource> source, TSource defaultValue )

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public static IEnumerable<TSource> ExceptBy( IEnumerable<TSource> first, IEnumerable<TKey> second, Func<TSource,TKey> keySelector, IEqualityComparer<TKey> comparer )

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public static TSource First( IEnumerable<TSource> source )

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public static TSource First( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static TSource FirstOrDefault( IEnumerable<TSource> source )

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public static TSource FirstOrDefault( IEnumerable<TSource> source, TSource defaultValue )

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public static TSource FirstOrDefault( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public static TSource FirstOrDefault( IEnumerable<TSource> source, Func<TSource,bool> predicate, TSource defaultValue )

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public static IEnumerable<IGrouping<TKey,TSource>> GroupBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector )

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public static IEnumerable<IGrouping<TKey,TSource>> GroupBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, IEqualityComparer<TKey> comparer )

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public static IEnumerable<IGrouping<TKey,TElement>> GroupBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector )

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public static IEnumerable<IGrouping<TKey,TElement>> GroupBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, IEqualityComparer<TKey> comparer )

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public static IEnumerable<TResult> GroupBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TKey,IEnumerable<TSource>,TResult> resultSelector )

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public static IEnumerable<TResult> GroupBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TKey,IEnumerable<TSource>,TResult> resultSelector, IEqualityComparer<TKey> comparer )

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public static IEnumerable<TResult> GroupBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, Func<TKey,IEnumerable<TElement>,TResult> resultSelector )

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public static IEnumerable<TResult> GroupBy( IEnumerable<TSource> source, Func<TSource,TKey> keySelector, Func<TSource,TElement> elementSelector, Func<TKey,IEnumerable<TElement>,TResult> resultSelector, IEqualityComparer<TKey> comparer )

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public static IEnumerable<TResult> GroupJoin( IEnumerable<TOuter> outer, IEnumerable<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,IEnumerable<TInner>,TResult> resultSelector )

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public static IEnumerable<TResult> GroupJoin( IEnumerable<TOuter> outer, IEnumerable<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,IEnumerable<TInner>,TResult> resultSelector, IEqualityComparer<TKey> comparer )

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public static IEnumerable<ValueTuple<int,TSource>> Index( IEnumerable<TSource> source )

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public static IEnumerable<TSource> Intersect( IEnumerable<TSource> first, IEnumerable<TSource> second )

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public static IEnumerable<TSource> Intersect( IEnumerable<TSource> first, IEnumerable<TSource> second, IEqualityComparer<TSource> comparer )

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public static IEnumerable<TSource> IntersectBy( IEnumerable<TSource> first, IEnumerable<TKey> second, Func<TSource,TKey> keySelector )

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public static IEnumerable<TSource> IntersectBy( IEnumerable<TSource> first, IEnumerable<TKey> second, Func<TSource,TKey> keySelector, IEqualityComparer<TKey> comparer )

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public static IEnumerable<TResult> Join( IEnumerable<TOuter> outer, IEnumerable<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,TInner,TResult> resultSelector )

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public static IEnumerable<TResult> Join( IEnumerable<TOuter> outer, IEnumerable<TInner> inner, Func<TOuter,TKey> outerKeySelector, Func<TInner,TKey> innerKeySelector, Func<TOuter,TInner,TResult> resultSelector, IEqualityComparer<TKey> comparer )

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public static TSource Last( IEnumerable<TSource> source )

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public static TSource Last( IEnumerable<TSource> source, Func<TSource,bool> predicate )

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public bool Equals( object obj )

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public static TSource LastOrDefault( IEnumerable<TSource> source )

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