47 lines
2.2 KiB
C#
47 lines
2.2 KiB
C#
using System.Collections.Generic;
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namespace MediaBrowser.Common.Extensions
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{
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// The MS CollectionExtensions are only available in netcoreapp
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public static class CollectionExtensions
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{
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public static TValue GetValueOrDefault<TKey, TValue>(this IReadOnlyDictionary<TKey, TValue> dictionary, TKey key)
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{
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dictionary.TryGetValue(key, out var ret);
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return ret;
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}
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/// <summary>
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/// Copies all the elements of the current collection to the specified list
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/// starting at the specified destination array index. The index is specified as a 32-bit integer.
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/// </summary>
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/// <param name="source">The current collection that is the source of the elements.</param>
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/// <param name="destination">The list that is the destination of the elements copied from the current collection.</param>
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/// <param name="index">A 32-bit integer that represents the index in <c>destination</c> at which copying begins.</param>
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/// <typeparam name="T"></typeparam>
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public static void CopyTo<T>(this IReadOnlyList<T> source, IList<T> destination, int index = 0)
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{
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for (int i = 0; i < source.Count; i++)
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{
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destination[index + i] = source[i];
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}
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}
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/// <summary>
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/// Copies all the elements of the current collection to the specified list
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/// starting at the specified destination array index. The index is specified as a 32-bit integer.
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/// </summary>
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/// <param name="source">The current collection that is the source of the elements.</param>
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/// <param name="destination">The list that is the destination of the elements copied from the current collection.</param>
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/// <param name="index">A 32-bit integer that represents the index in <c>destination</c> at which copying begins.</param>
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/// <typeparam name="T"></typeparam>
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public static void CopyTo<T>(this IReadOnlyCollection<T> source, IList<T> destination, int index = 0)
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{
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foreach (T item in source)
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{
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destination[index++] = item;
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}
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}
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}
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}
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