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Let us understand the difference between Select and SelectMany with an example.
In this example, the Select() method returns List of List[string]. To print all the subjects we will have to use 2 nested foreach loops.
IEnumerable[List[string]] result = Student.GetAllStudetns().Select(s =] s.Subjects);
foreach (List[string] stringList in result)
{
foreach (string str in stringList)
{
Console.WriteLine(str);
}
}
SelectMany() on the other hand, flattens queries that return lists of lists into a single list. So in this case to print all the subjects we have to use just one foreach loop.
IEnumerable[string] result = Student.GetAllStudetns().SelectMany(s =] s.Subjects);
foreach (string str in result)
{
Console.WriteLine(str);
}
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thank you so much sir..:)
who else liked the video just for that crisssp voice
I don't understand why there are dislikes.. May be some aliens are doing this.. Kudvenkat sir.. I am very grateful to you sir.. You are like Sachin in the field of cricket..🙏🙏🙏🙏
this man true legend!
Excellent..!! very nice explanation..!! I want these slides. where can I find them?
this whole LINQ tutorial series is great!
thnx a lot sir
plz Upload design patterns
nice
Can you help ?
I am traning my programing:
writing a server usse system
Server:
Int32 port = 13000;
IPAddress localAddr = IPAddress.Parse("127.0.0.1");
server = new TcpListener(localAddr, port);
client
Int32 port = 13000;
TcpClient client = new TcpClient("127.0.0.1", port);
When I run the clent this wkat responce i get.
……………………………………………………………………………..
SocketException: System.Net.Sockets.SocketException (0x80004005): No connection
could be made because the target machine actively refused it 127.0.0.1:8080
at System.Net.Sockets.TcpClient..ctor(String hostname, Int32 port)
at Con_Ms_User.Program.Connect(String server, String message) in d:UWSTest
OrcB00231110ALLCon Ms UserCon Ms UserProgram.cs:line 26
……………………………………………………………………………..
also runing xampp at port 8080 does not work.
Thanks
Good point 🙂