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namespace LibMatrix.Extensions;
public static class DictionaryExtensions {
public static bool ChangeKey<TKey, TValue>(this IDictionary<TKey, TValue> dict,
TKey oldKey, TKey newKey) {
TValue value;
if (!dict.Remove(oldKey, out value))
return false;
dict[newKey] = value; // or dict.Add(newKey, value) depending on ur comfort
return true;
}
public static Y GetOrCreate<X, Y>(this IDictionary<X, Y> dict, X key) where Y : new() {
if (dict.TryGetValue(key, out var value)) {
return value;
}
value = new Y();
dict.Add(key, value);
return value;
}
public static Y GetOrCreate<X, Y>(this IDictionary<X, Y> dict, X key, Func<X, Y> valueFactory) {
if (dict.TryGetValue(key, out var value)) {
return value;
}
value = valueFactory(key);
dict.Add(key, value);
return value;
}
}
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