jrojas
47 lines
2.7 KiB
C#
47 lines
2.7 KiB
C#
namespace adas_core.Domain.Utils;
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/// <summary>
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/// Provides static extension methods to augment the functionality of dictionary types.
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/// </summary>
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public static class DictionaryEx
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{
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/// <summary>
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/// Retrieves the value associated with the specified key from the dictionary, or returns the provided default value if the key is not found.
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/// </summary>
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/// <param name="dict">The dictionary to search for the key.</param>
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/// <param name="key">The key whose associated value should be returned.</param>
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/// <param name="defaultValue">The value to return when the key is not present in the dictionary. Defaults to the default value of <typeparamref name="TV"/>.</param>
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/// <returns>The value associated with the key if found; otherwise, <paramref name="defaultValue"/>.</returns>
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public static TV? GetValue<TK, TV>(this IDictionary<TK, TV> dict, TK key, TV? defaultValue = default)
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{
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return dict.TryGetValue(key, out var value) ? value : defaultValue;
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}
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/// <summary>
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/// Converts a dictionary into a formatted string by joining each key-value pair with a key separator and concatenating all pairs with an item separator.
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/// </summary>
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/// <param name="dict">The source dictionary whose entries will be converted to a string.</param>
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/// <param name="itemSeparator">The separator placed between each formatted key-value pair in the resulting string.</param>
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/// <param name="keySeparator">The separator placed between a key and its corresponding value within each pair.</param>
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/// <returns>A single string containing all dictionary entries formatted and joined using the specified separators.</returns>
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public static string ToListString<TK, TV>(this IDictionary<TK, TV> dict, string itemSeparator = ", ",
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string keySeparator = ": ")
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{
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var s = dict.Keys.Select(key => key + keySeparator + dict[key]).ToList();
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return string.Join(itemSeparator, s);
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}
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/// <summary>
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/// Attempts to retrieve the value associated with the specified key from the dictionary, returning null if the key is not found.
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/// </summary>
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/// <param name="dictionary">The dictionary to search for the key.</param>
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/// <param name="key">The key whose associated value should be retrieved.</param>
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/// <returns>The value associated with the key, or null if the key was not found in the dictionary.</returns>
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public static TValue? TryGetAndReturn<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, TKey key)
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where TKey : notnull where TValue : class
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{
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if (!dictionary.TryGetValue(key, out var retValue)) retValue = null;
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return retValue;
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}
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} |