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1. Top results related to eight function of dictionary in c# 3 code

   • Dictionary Of Dictionaries in C#

     Top Answer

     Answered Dec 08, 2016 · 8 votes

     You can fill the dictionary directly in your loop

     private Dictionary<string, Dictionary<string, Dictionary<string, string>>> zooDict = new Dictionary<string, Dictionary<string, Dictionary<string, string>>>();-while (reader.Read()){ var location = reader.GetString(0).Trim(); var animal= reader.GetString(1).Trim(); var Monday= reader.GetValue(1).ToString().Trim(); var Tuesday= reader.GetValue(3).ToString().Trim(); if(!zooDict.ContainsKey(location)) zooDict[location] = new Dictionary<string, Dictionary<string, string>>(); zooDict[location][animal] = new Dictionary<string, string>() { { "MN", Monday }, { "Tu", Tuesday } };}

     As a side note, you might want to consider creating classes to represent your objects, add them to a dictionary or list, and use Newtonsoft Json.net (http://www.newtonsoft.com/json) to serialize them instead of using dictionaries for everything. For example, you can create a class:

     public class Animal{ public string Name { get; set; } public int Monday { get; set; } public int Tuesday { get; set; }}var zooDict = new Dictionary<string, List<Animal>>();// then in your while loop you do this if(!zooDict.ContainsKey(location)) zooDict[location] = new List<Animal>();zooDict[location].Add(new Animal() { /* fill Monday and Tuesday properties */ });

     Of course, you can take this one step further and create a class with properties string Location and List<Animal> Animals, and eliminate dictionaries altogether. It depends on your use case(s) I guess

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     1/5

   • c# Lookup for a value in Dictionary of Dictionary

     Top Answer

     Answered Jul 12, 2011 · 4 votes

     you could just have a separate lookup for users:

     Dictionary<string, InfoObject> userLookup;-

     This only of course if you want to optimize for lookup speed, the downside is that addition and removal you have to do now on two separate data structures which have to keep in sync.

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     2/5

   • C# - dictionary - How to get max of specific class value in dictionary?

     Top Answer

     Answered Aug 11, 2020 · 5 votes

     To get LineInfo with maximum lineDistance you can use Values collection. Since there is no MaxBy in standard LINQ you can achieve similar effect with Aggregate

     :

     var max = lines.Values .Aggregate((acc, curr) => acc.lineDistance > curr.lineDistance ? acc: curr);-

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     3/5

   • C# implementation of Dictionary to count occurrences of words returns duplicate words in output

     Top Answer

     Answered Mar 30, 2011 · 9 votes

     Another way is to split on non words.

     var lyrics = "I fly with the stars in the skies I am no longer tryin' to survive I believe that life is a prize But to live doesn't mean your alive Don't worry bout me and who I fire I get what I desire, It's my empire And yes I call the shots".ToLower();var contents = Regex.Split(lyrics, @"[^\w'+]");-

     Also here's an alternative (and probably more obscure) loop

     int value;foreach (var word in contents){ dict[word] = dict.TryGetValue(word, out value) ? ++value : 1; }dict.Remove("");

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     4/5

   • C# - Searching keys of dictionary vs searching values in List

     Top Answer

     Answered Jan 28, 2014 · 9 votes

     If by "better" you mean "faster" then use a dictionary. Dictionary keys are organized by hash codes so lookups are significantly faster that list searches with more than just a few items in the ocllection.

     With a good hashing algorithm, Dictionary searches can be close to O(1), meaning the search time is independent of the size of the dictionary. Lists, on the other hand, are O(n), meaning that the time is (on average) proportional to the size of the list.

     If you just have key items (not mapping keys to values) you might also try a HashSet

     . It has the benefit of O(1) lookups without the overhead of the Value side of a dictionary.

     (Granted the overhead is probably minimal, but why have it if you don't need it?)

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     5/5

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2. stackoverflow.com › questions › 4233536C# Store functions in a Dictionary - Stack Overflow

   stackoverflow.com › questions › 4233536

   • Cached

   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>>();...

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3. kenslearningcurve.com › tutorials › usingUsing dictionaries in C# with examples - Tutorial

   kenslearningcurve.com › tutorials › using

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   Dec 30, 2022 · There are several ways to retrieve the keys and values from dictionaries in C#. The simplest way is to use the key as if it’s an index, as shown below. Dictionary<int, string> movies = new() {. { 1, "The Matrix" }, { 2, "Inception" }, { 3, "Jaws" } }; movies.Add(4, "The Muppets");

4. People also ask

   How does a dictionary work?

   • The dictionary behaves like a regular dictionary from the key type onto a set of the value type, but also provides functionality to directly add a single value of the value type, and in the background handles the creation of an underlying set and/or addition to that set.

   c# - Multi value Dictionary - Stack Overflow

   stackoverflow.com/questions/569903/multi-value-dictionary

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   How to create a dictionary from a list or array in C#?

   • To create a dictionary from a list or array in C#, you can use the ToDictionary method from the System.Linq namespace. This method takes a sequence of elements and a function that specifies how to create the key and value for each element. Here's an example of creating a dictionary from a list of strings:

   C# Dictionary: Complete Guide [2023] - Josip Miskovic

   josipmisko.com/posts/c-sharp-dictionary

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   How to add a dictionary in C#?

   • Both the key and value are generic, which means you can add any type of member, class, etc. you want. It is recommended to keep the key simple, like a GUID or an integer. Dictionaries in C# also have known methods like Add () , Remove (), and Clear (). It also has methods specifically for a dictionary. To sum it up:

   Using dictionaries in C# with examples - Tutorial - Kens Learning Curve

   kenslearningcurve.com/tutorials/using-dictionaries-in-c/

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   What is a dictionary in C#?

   • Dictionaries in C# are collections of keys, values, and a well-used class. I’ll show you the class’s basics in this tutorial with examples. I’ll explain what a dictionary is, what it’s used for, and how we use them. What Are Dictionaries In C#? What Are Dictionaries In C#? It’s basically a list but with a key and a value.

   Using dictionaries in C# with examples - Tutorial - Kens Learning Curve

   kenslearningcurve.com/tutorials/using-dictionaries-in-c/

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5. www.gyata.ai › c-sharp › c-sharp-dictionaryMastering C# Dictionary: A Comprehensive Guide

   www.gyata.ai › c-sharp › c-sharp-dictionary

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   Dec 8, 2023 · The C# Dictionary is a powerful tool that allows you to store and manipulate data as key-value pairs. It is part of the System.Collections.Generic namespace and has methods for adding, accessing, and modifying elements.

6. josipmisko.com › posts › c-sharp-dictionaryC# Dictionary: Complete Guide [2023] – Josip Miskovic

   josipmisko.com › posts › c-sharp-dictionary

   • Cached

   Jan 26, 2023 · To create a dictionary from a list or array in C#, you can use the ToDictionary method from the System.Linq namespace. This method takes a sequence of elements and a function that specifies how to create the key and value for each element. Here's an example of creating a dictionary from a list of strings:

7. code-maze.com › dictionary-csharpDictionary in C# - Code Maze

   code-maze.com › dictionary-csharp

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   Jul 13, 2022 · In this article, we are going to talk about the Dictionary in C#. We will learn how to create a dictionary, add, retrieve, update, and delete elements. Among that, we will see the usage of its common properties and methods.

8. code-maze.com › csharp-iterate-through-dictionaryDifferent Ways to Iterate Through a Dictionary in C# - Code Maze

   code-maze.com › csharp-iterate-through-dictionary

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   Mar 22, 2024 · Dictionary allows us to store items in a collection using key-value pairs. It is included in the System.Collection.Generic namespace. In this article, we are going to learn how to iterate through a Dictionary in different ways.

9. www.geeksforgeeks.org › c-sharp-dictionary-classC# | Dictionary Class - GeeksforGeeks

   www.geeksforgeeks.org › c-sharp-dictionary-class

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   Sep 1, 2021 · The Dictionary<TKey, TValue> Class in C# is a collection of Keys and Values. It is a generic collection class in the System.Collections.Generic namespace. The Dictionary <TKey, TValue> generic class provides a mapping from a set of keys to a set of values.