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Apr 1, 2019 · 2. If you're not stuck on the dictionary and you want a one to one relationship between the type and the function, you can use generic static variables to store and retrieve the functions and gain type safety in the process. The "magic" occurs in StringInternal<T>.
Adding and invoking functions in a Dictionary in C#: Adding functions to a Dictionary and invoking them. functionDictionary ["Add"] = (a, b) => a + b; int result = functionDictionary ["Add"] (3, 4); Dynamically populating a Dictionary with functions in C#: Dynamically populating a Dictionary with functions using a loop or other logic.
Second parameter is a function, which will be invoked on each dictionary element. This function appends data to accumulator. Last parameter builds result string from accumulator; By the way you can use following code to build required string: String.Join(", ", dic.Select(kvp => kvp.Key + " = " + kvp.Value));
Sep 11, 2014 · You'll have to implement your own output logic. Dictionary<TKey, TValue> does not override Object.ToString so the output is just the class name. Something like: public static class DictionaryExtensions. {. public static string WriteContent(this Dictionary<string, string> source) {. var sb = new StringBuilder();
May 25, 2009 · You're almost there: IDictionary<MyObject, bool> selectedObjects = allowedObjects. .ToDictionary(o => o, o => preferedObjects.Contains(q)); The ToDictionary extension method works around using two lambda expressions to generate the key/value pair rather than the KeyValuePair type. You could speed things dramatically by using HashSet<T> objects ...
String- Function dictionary c# where functions have different arguments. You can create a dictionary that maps strings to functions with different arguments using C#'s built-in Func and Action delegates. Here's an example: Dictionary<string, Delegate> functionDictionary = new Dictionary<string, Delegate> (); functionDictionary.Add ("foo", new ...
If you're dealing w/ a new Dictionary (and you don't have existing rows to lose), you can always use ToDictionary() from another list of objects. So, in your case, you would do something like this: Dictionary<string, string> dic = new Dictionary<string, string>(); dic = SomeList.ToDictionary(x => x.Attribute1, x => x.Attribute2);
