.NET Framework
- Getting started with .NET Framework
- Awesome Book
- Awesome Community
- Awesome Course
- Awesome Tutorial
- Awesome YouTube
- .NET Core
- Acronym Glossary
- ADO.NET
- CLR
- Code Contracts
- Collections
- Custom Types
- DateTime parsing
- Dependency Injection
- Dictionaries
- Encryption / Cryptography
- Exceptions
- Expression Trees
- File Input/Output
- ForEach
- Garbage Collection
- Globalization in ASP.NET MVC using Smart internationalization for ASP.NET
- HTTP clients
- HTTP servers
- JIT compiler
- JSON in .NET with Newtonsoft.Json
- JSON Serialization
- LINQ
- Aggregate (fold)
- All
- Any
- Average
- Cast
- Concat
- Contains
- Count
- DefaultIfEmpty
- Distinct
- ElementAt
- ElementAtOrDefault
- Empty
- Except
- First (find)
- FirstOrDefault
- GroupBy
- GroupJoin
- Intersect
- Join
- Last
- LastOrDefault
- Left Outer Join
- Max
- Min
- OfType
- OrderBy
- OrderByDescending
- Range
- Repeat
- Reverse
- Select (map)
- SelectMany (flat map)
- SequenceEqual
- Single
- SingleOrDefault
- Skip
- SkipWhile
- Sum
- Take
- TakeWhile
- ThenBy
- ToArray
- ToDictionary
- ToList
- ToLookup
- Union
- Where (filter)
- Zip
- Managed Extensibility Framework
- Memory management
- Networking
- NuGet packaging system
- Parallel processing using .Net framework
- Platform Invoke
- Process and Thread affinity setting
- Reading and writing Zip files
- ReadOnlyCollections
- Reflection
- Regular Expressions (System.Text.RegularExpressions)
- Serial Ports
- Settings
- SpeechRecognitionEngine class to recognize speech
- Stack and Heap
- Strings
- Synchronization Contexts
- System.Diagnostics
- System.IO
- System.IO.File class
- System.Net.Mail
- System.Reflection.Emit namespace
- System.Runtime.Caching.MemoryCache (ObjectCache)
- Task Parallel Library (TPL)
- Task Parallel Library (TPL) API Overviews
- Threading
- TPL Dataflow
- Unit testing
- Upload file and POST data to webserver
-
Using Progress
and IProgress - VB Forms
- Work with SHA1 in C#
- Work with SHA1 in C#
- Write to and read from StdErr stream
- XmlSerializer
.NET Framework LINQ DefaultIfEmpty
Example
var numbers = new[] {2,4,6,8,1,3,5,7};
var numbersOrDefault = numbers.DefaultIfEmpty();
Console.WriteLine(numbers.SequenceEqual(numbersOrDefault)); //True
var noNumbers = new int[0];
var noNumbersOrDefault = noNumbers.DefaultIfEmpty();
Console.WriteLine(noNumbersOrDefault.Count()); //1
Console.WriteLine(noNumbersOrDefault.Single()); //0
var noNumbersOrExplicitDefault = noNumbers.DefaultIfEmpty(34);
Console.WriteLine(noNumbersOrExplicitDefault.Count()); //1
Console.WriteLine(noNumbersOrExplicitDefault.Single()); //34
