LenovoLegionToolkit

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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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namespace LenovoLegionToolkit.Lib.Extensions;
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public static class DictionaryExtensions
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{
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    public static ReadOnlyDictionary<TKey, TValue> AsReadOnlyDictionary<TKey, TValue>(this IDictionary<TKey, TValue> source) where TKey : notnull
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    {
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        return new ReadOnlyDictionary<TKey, TValue>(source);
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    }
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    public static void AddRange<TKey, TValue>(this IDictionary<TKey, TValue> source, IDictionary<TKey, TValue> items)
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    {
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        foreach (var keyValuePair in items)
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            source.Add(keyValuePair.Key, keyValuePair.Value);
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    }
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    public static TValue? GetValueOrNull<TKey, TValue>(this IReadOnlyDictionary<TKey, TValue> dictionary, TKey key) where TValue : struct
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    {
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        return !dictionary.TryGetValue(key, out var obj) ? null : obj;
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    }
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}
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