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How do I create a Dictionary where I can store functions? Thanks. I have about 30+ functions which can be executed from the user. I want to be able to execute the function this way: private void functionName(arg1, arg2, arg3) { // code. } dictionaryName.add("doSomething", functionName); private void interceptCommand(string command) {
Code sample
private object function2(object arg1) { return null; }private object function3(object arg1, object arg3) { return null; }Dictionary<string, Func<State, object>> functions;public Interceptor() {functions = new Dictionary<string, Func<State, object>>();...- Dictionary Characteristics
- Creating A Dictionary
- Access Dictionary Elements
- Update Dictionary
- Remove Elements in Dictionary
- Dictionary Class Hierarchy
Dictionary stores key-value pairs.Comes under System.Collections.Genericnamespace.Implements IDictionary interface.Keys must be unique and cannot be null.You can create the Dictionary object by passing the type of keys and values it can store. The following example shows how to create a dictionary and add key-value pairs. In the above example, numberNames is a Dictionary type dictionary, so it can store int keys and string values. In the same way, cities is a Dictionary
The Dictionary can be accessed using indexer. Specify a key to get the associated value. You can also use the ElementAt() method to get a KeyValuePairfrom the specified index.
Update the value of a key by specifying a key in the indexer. It will throw the KeyNotFoundException if a key does not exist in the dictionary, therefore use the ContainsKey()method before accessing unknown keys.
The Remove() method deletes an existing key-value pair from a dictionary. The Clear()method deletes all the elements of the dictionary.
The following diagram illustrates the generic Dictionary class hierarchy. Learn about Dictionary methods and propertieson docs.microsoft.com.
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Why is it called a dictionary in C#?
What is a dictionary class in C#?
How to initialize a dictionary in C#?
How to create a new dictionary?
Dictionary<TKey,TValue> (Int32, IEquality Comparer<TKey>) Initializes a new instance of the Dictionary<TKey,TValue> class that is empty, has the specified initial capacity, and uses the specified IEqualityComparer<T>. Dictionary<TKey,TValue> (Serialization Info, Streaming Context) Obsolete.
Jan 26, 2023 · To initialize a dictionary in C#, we first need to provide the type for the key and the type for the value. For example, for a dictionary that stores the name and age of a person, the initialization would be: C# Dictionary<string, int> nameToAge = new Dictionary<string, int>(); The first type inside the angle brackets is the key type.
Jul 5, 2023 · C# Dictionary tutorial shows how to work with a Dictionary collection in C#. A dictionary, also called an associative array, is a collection of unique keys and a collection of values, where each key is associated with one value. Retrieving and adding values is very fast. Dictionaries take more memory because for each value there is also a key.
Aug 25, 2023 · What is a Dictionary? A dictionary is a collection type in C# that allows you to store key-value pairs. Each key in a dictionary is unique, and it is used to retrieve the associated value. This makes dictionaries an efficient data structure for looking up and retrieving values based on their keys.
Aug 16, 2023 · In C#, the ` Dictionary<TKey, TValue> ` class from the ` System.Collections.Generic ` namespace provides a powerful implementation of this data structure. This post we delve into the technical aspects of the C# Dictionary class, highlighting its features, usage scenarios, and performance considerations. Anatomy of the Dictionary Class: