/// <summary>
/// Merges dictionaries
/// </summary>
/// <typeparam name="TK">The type of the tk.</typeparam>
/// <typeparam name="TV">The type of the tv.</typeparam>
/// <param name="mergeTechnique">The merge technique.</param>
/// <param name="dictionaries">The dictionaries.</param>
/// <returns>Dictionary<TK, TV>.</returns>
/// <exception cref="System.ArgumentException">Invalid or unsupported Merge Technique - mergeTechnique</exception>
public static IDictionary <TK, TV> Merge <TK, TV>(MergeTechnique mergeTechnique, params IDictionary <TK, TV>[] dictionaries)
{
switch (mergeTechnique)
{
case MergeTechnique.Unique:
return(MergeUnique(dictionaries));
case MergeTechnique.TakeFirst:
return(MergeFirst(dictionaries));
case MergeTechnique.TakeLast:
return(MergeLast(dictionaries));
default:
throw new EnumValueException <MergeTechnique>(mergeTechnique);
}
}
/// <summary>
/// Merges this dictionary with another one
/// </summary>
/// <typeparam name="TK">The type of the tk.</typeparam>
/// <typeparam name="TV">The type of the tv.</typeparam>
/// <param name="dict">The dictionary.</param>
/// <param name="other">The other.</param>
/// <param name="mergeTechnique">The merge technique.</param>
/// <returns>Dictionary<TK, TV>.</returns>
/// <remarks>Source and target dictionaries are left untouched</remarks>
public static IDictionary <TK, TV> MergeWith <TK, TV>(this IDictionary <TK, TV> dict, IDictionary <TK, TV> other, MergeTechnique mergeTechnique = MergeTechnique.Unique)
{
var result = Merge(mergeTechnique, dict, other);
return(result);
}
/// <summary>
/// Create a Dictionary from a NameValueCollection
/// </summary>
/// <param name="collection">The collection.</param>
/// <param name="mergeTechnique">The merge technique.</param>
/// <returns>IDictionary<System.String, System.String>.</returns>
public static IDictionary <string, string> ToDictionary(this NameValueCollection collection, MergeTechnique mergeTechnique)
{
var dictionaries = new List <IDictionary <string, string> >();
for (var i = 0; i < collection.Count; ++i)
{
var key = collection.GetKey(i);
var values = collection.GetValues(i) ?? Enumerable.Empty <string>();
foreach (var value in values)
{
var dict = new Dictionary <string, string>()
{
{ key, value }
};
dictionaries.Add(dict);
}
}
return(DictionaryExtensions.Merge(mergeTechnique, dictionaries.ToArray()));
}
