public void Add(Sequence s)
{
if (!_Sequences.ContainsKey(s.ID))
{
_Sequences.Add(s.ID, s);
NewSequence?.Invoke(s);
}
}
/// <summary> /// Adds <paramref name="items"/> to the end of <paramref name="collection"/>. /// </summary> /// <typeparam name="T">The type of items in the collection.</typeparam> /// <param name="collection">The collection to be concatenated with the items.</param> /// <param name="items">The items to be added to the end of the collection.</param> /// <returns>The concatenated collection.</returns> public static IEnumerable <T> Append <T>(IEnumerable <T> collection, params T[] items) => NewSequence.Append(collection, items);
/// <summary> /// Constructs a sequence from the single element. /// </summary> /// <typeparam name="T">Type of element.</typeparam> /// <param name="item">An item to be placed into sequence.</param> /// <returns>Sequence of single element.</returns> public static IEnumerable <T> Singleton <T>(T item) => NewSequence.Singleton(item);
/// <summary> /// Concatenates each element from the collection into single string. /// </summary> /// <typeparam name="T">Type of array elements.</typeparam> /// <param name="collection">Collection to convert. Cannot be <see langword="null"/>.</param> /// <param name="delimiter">Delimiter between elements in the final string.</param> /// <param name="ifEmpty">A string to be returned if collection has no elements.</param> /// <returns>Converted collection into string.</returns> public static string ToString <T>(IEnumerable <T> collection, string delimiter, string ifEmpty = "") => NewSequence.ToString(collection, delimiter, ifEmpty);
/// <summary> /// Bypasses a specified number of elements in a sequence. /// </summary> /// <typeparam name="T">The type of the elements in the sequence.</typeparam> /// <param name="enumerator">Enumerator to modify. Cannot be <see langword="null"/>.</param> /// <param name="count">The number of elements to skip.</param> /// <returns><see langword="true"/>, if current element is available; otherwise, <see langword="false"/>.</returns> /// <exception cref="OperationCanceledException">The operation has been canceled.</exception> public static ValueTask <bool> SkipAsync <T>(IAsyncEnumerator <T> enumerator, int count) => NewSequence.SkipAsync(enumerator, count);
/// <summary>
/// Obtains first value type in the sequence; or <see langword="null"/>
/// if sequence is empty.
/// </summary>
/// <typeparam name="T">Type of elements in the sequence.</typeparam>
/// <param name="seq">A sequence to check. Cannot be <see langword="null"/>.</param>
/// <returns>First element in the sequence; or <see langword="null"/> if sequence is empty. </returns>
public static T?FirstOrNull <T>(IEnumerable <T> seq)
where T : struct
=> NewSequence.FirstOrNull(seq);
/// <summary> /// Applies specified action to each collection element. /// </summary> /// <typeparam name="T">Type of elements in the collection.</typeparam> /// <param name="collection">A collection to enumerate. Cannot be <see langword="null"/>.</param> /// <param name="action">An action to applied for each element.</param> public static void ForEach <T>(IEnumerable <T> collection, Action <T> action) => NewSequence.ForEach(collection, action);
/// <summary> /// Converts synchronous collection of elements to asynchronous. /// </summary> /// <param name="enumerable">The collection of elements.</param> /// <typeparam name="T">The type of the elements in the collection.</typeparam> /// <returns>The asynchronous wrapper over synchronous collection of elements.</returns> public static IAsyncEnumerable <T> ToAsyncEnumerable <T>(IEnumerable <T> enumerable) => NewSequence.ToAsyncEnumerable(enumerable);
/// <summary>
/// Returns the first element in a sequence that satisfies a specified condition.
/// </summary>
/// <typeparam name="T">The type of the elements of source.</typeparam>
/// <param name="seq">A collection to return an element from.</param>
/// <param name="filter">A function to test each element for a condition.</param>
/// <returns>The first element in the sequence that matches to the specified filter; or empty value.</returns>
public static Optional <T> FirstOrEmpty <T>(IEnumerable <T> seq, Predicate <T> filter)
where T : notnull
=> NewSequence.FirstOrEmpty(seq, filter);
/// <summary>
/// Returns the first element in a sequence that satisfies a specified condition.
/// </summary>
/// <typeparam name="T">The type of the elements of source.</typeparam>
/// <param name="seq">A collection to return an element from.</param>
/// <param name="filter">A function to test each element for a condition.</param>
/// <param name="token">The token that can be used to cancel enumeration.</param>
/// <returns>The first element in the sequence that matches to the specified filter; or empty value.</returns>
/// <exception cref="OperationCanceledException">The operation has been canceled.</exception>
public static ValueTask <Optional <T> > FirstOrEmptyAsync <T>(IAsyncEnumerable <T> seq, ValueFunc <T, bool> filter, CancellationToken token = default)
where T : notnull
=> NewSequence.FirstOrEmptyAsync(seq, filter, token);
/// <summary>
/// Obtains first value in the sequence; or <see cref="Optional{T}.None"/>
/// if sequence is empty.
/// </summary>
/// <typeparam name="T">Type of elements in the sequence.</typeparam>
/// <param name="seq">A sequence to check. Cannot be <see langword="null"/>.</param>
/// <param name="token">The token that can be used to cancel enumeration.</param>
/// <returns>The first element in the sequence; or <see cref="Optional{T}.None"/> if sequence is empty. </returns>
/// <exception cref="OperationCanceledException">The operation has been canceled.</exception>
public static ValueTask <Optional <T> > FirstOrEmptyAsync <T>(IAsyncEnumerable <T> seq, CancellationToken token = default)
=> NewSequence.FirstOrEmptyAsync(seq, token);
/// <summary>
/// Obtains first value type in the sequence; or <see langword="null"/>
/// if sequence is empty.
/// </summary>
/// <typeparam name="T">Type of elements in the sequence.</typeparam>
/// <param name="seq">A sequence to check. Cannot be <see langword="null"/>.</param>
/// <param name="token">The token that can be used to cancel enumeration.</param>
/// <returns>First element in the sequence; or <see langword="null"/> if sequence is empty. </returns>
/// <exception cref="OperationCanceledException">The operation has been canceled.</exception>
public static ValueTask <T?> FirstOrNullAsync <T>(IAsyncEnumerable <T> seq, CancellationToken token = default)
where T : struct
=> NewSequence.FirstOrNullAsync(seq, token);
/// <summary> /// Converts asynchronous collection to the array. /// </summary> /// <param name="collection">The asynchronous collection.</param> /// <param name="initialCapacity">The initial capacity of internal buffer.</param> /// <param name="allocator">The memory allocator used by internal buffer.</param> /// <param name="token">The token that can be used to cancel the operation.</param> /// <typeparam name="T">Type of elements in the collection.</typeparam> /// <returns>The array representing all elements from the source collection.</returns> /// <exception cref="OperationCanceledException">The operation has been canceled.</exception> public static Task <T[]> ToArrayAsync <T>(IAsyncEnumerable <T> collection, int initialCapacity = 10, MemoryAllocator <T>?allocator = null, CancellationToken token = default) => NewSequence.ToArrayAsync(collection, initialCapacity, allocator, token);
/// <summary>
/// Obtains element at the specified index in the sequence.
/// </summary>
/// <typeparam name="T">Type of elements in the sequence.</typeparam>
/// <param name="collection">Source collection.</param>
/// <param name="index">Index of the element to read.</param>
/// <param name="token">The token that can be used to cancel enumeration.</param>
/// <returns>The requested element; or <see cref="Optional{T}.None"/> if index is out of range.</returns>
/// <exception cref="OperationCanceledException">The operation has been canceled.</exception>
public static ValueTask <Optional <T> > ElementAtAsync <T>(IAsyncEnumerable <T> collection, int index, CancellationToken token = default)
=> NewSequence.ElementAtAsync(collection, index, token);
/// <summary>
/// Gets enumerator over all elements in the memory.
/// </summary>
/// <param name="memory">The memory block to be converted.</param>
/// <typeparam name="T">The type of elements in the memory.</typeparam>
/// <returns>The enumerator over all elements in the memory.</returns>
/// <seealso cref="System.Runtime.InteropServices.MemoryMarshal.ToEnumerable{T}(ReadOnlyMemory{T})"/>
public static IEnumerator <T> ToEnumerator <T>(ReadOnlyMemory <T> memory)
=> NewSequence.ToEnumerator(memory);
/// <summary> /// Computes hash code for the sequence of objects. /// </summary> /// <param name="sequence">The sequence of elements.</param> /// <param name="salted"><see langword="true"/> to include randomized salt data into hashing; <see langword="false"/> to use data from memory only.</param> /// <returns>The hash code computed from each element in the sequence.</returns> public static int SequenceHashCode(IEnumerable <object?> sequence, bool salted = true) => NewSequence.SequenceHashCode(sequence, salted);
/// <summary> /// Bypasses a specified number of elements in a sequence. /// </summary> /// <typeparam name="T">The type of the elements in the sequence.</typeparam> /// <param name="enumerator">Enumerator to modify. Cannot be <see langword="null"/>.</param> /// <param name="count">The number of elements to skip.</param> /// <returns><see langword="true"/>, if current element is available; otherwise, <see langword="false"/>.</returns> public static bool Skip <T>(IEnumerator <T> enumerator, int count) => NewSequence.Skip(enumerator, count);
/// <summary> /// Obtains asynchronous enumerator over the sequence of elements. /// </summary> /// <param name="enumerable">The collection of elements.</param> /// <param name="token">The token that can be used by consumer to cancel the enumeration.</param> /// <typeparam name="T">The type of the elements in the collection.</typeparam> /// <returns>The asynchronous wrapper over synchronous enumerator.</returns> public static IAsyncEnumerator <T> GetAsyncEnumerator <T>(IEnumerable <T> enumerable, CancellationToken token = default) => NewSequence.GetAsyncEnumerator(enumerable, token);
/// <summary>
/// Bypasses a specified number of elements in a sequence.
/// </summary>
/// <typeparam name="TEnumerator">The type of the sequence.</typeparam>
/// <typeparam name="T">The type of the elements in the sequence.</typeparam>
/// <param name="enumerator">Enumerator to modify.</param>
/// <param name="count">The number of elements to skip.</param>
/// <returns><see langword="true"/>, if current element is available; otherwise, <see langword="false"/>.</returns>
public static bool Skip <TEnumerator, T>(ref TEnumerator enumerator, int count)
where TEnumerator : struct, IEnumerator <T>
=> NewSequence.Skip <TEnumerator, T>(ref enumerator, count);
/// <summary> /// Applies the specified asynchronous action to each collection element. /// </summary> /// <typeparam name="T">Type of elements in the collection.</typeparam> /// <param name="collection">A collection to enumerate. Cannot be <see langword="null"/>.</param> /// <param name="action">An action to applied for each element.</param> /// <param name="token">The token that can be used to cancel the enumeration.</param> /// <returns>The task representing asynchronous execution of this method.</returns> /// <exception cref="OperationCanceledException">The enumeration has been canceled.</exception> public static ValueTask ForEachAsync <T>(IEnumerable <T> collection, ValueFunc <T, CancellationToken, ValueTask> action, CancellationToken token = default) => NewSequence.ForEachAsync(collection, action, token);
/// <summary>
/// Obtains element at the specified index in the sequence.
/// </summary>
/// <remarks>
/// This method is optimized for types <see cref="IList{T}"/>
/// and <see cref="IReadOnlyList{T}"/>.
/// </remarks>
/// <typeparam name="T">Type of elements in the sequence.</typeparam>
/// <param name="collection">Source collection.</param>
/// <param name="index">Index of the element to read.</param>
/// <param name="element">Obtained element.</param>
/// <returns><see langword="true"/>, if element is available in the collection and obtained successfully; otherwise, <see langword="false"/>.</returns>
public static bool ElementAt <T>(IEnumerable <T> collection, int index, [MaybeNullWhen(false)] out T element)
=> NewSequence.ElementAt(collection, index, out element);
/// <summary>
/// Obtains first value in the sequence; or <see cref="Optional{T}.None"/>
/// if sequence is empty.
/// </summary>
/// <typeparam name="T">Type of elements in the sequence.</typeparam>
/// <param name="seq">A sequence to check. Cannot be <see langword="null"/>.</param>
/// <returns>The first element in the sequence; or <see cref="Optional{T}.None"/> if sequence is empty. </returns>
public static Optional <T> FirstOrEmpty <T>(IEnumerable <T> seq)
=> NewSequence.FirstOrEmpty(seq);
/// <summary>
/// Skip <see langword="null"/> values in the collection.
/// </summary>
/// <typeparam name="T">Type of elements in the collection.</typeparam>
/// <param name="collection">A collection to check. Cannot be <see langword="null"/>.</param>
/// <returns>Modified lazy collection without <see langword="null"/> values.</returns>
public static IEnumerable <T> SkipNulls <T>(IEnumerable <T?> collection)
where T : class
=> NewSequence.SkipNulls(collection);
