SelectMany. This C# method, from LINQ, collapses many elements into a single collection. The resulting collection is of another element type.
C# method notes. We specify how an element is transformed into a collection of other elements. For example, we can change string elements into char array elements.
using System;
using System.Linq;
class Program
{
static void Main()
{
// Input.
string[] array =
{
"dot",
"net",
"perls"
};
// Convert each string in the string array to a character array.
// ... Then combine those character arrays into one.
var result = array.SelectMany(element => element.ToCharArray());
// Display letters.foreach (char letter in result)
{
Console.WriteLine(letter);
}
}
}d
o
t
n
e
t
p
e
r
l
s
Discussion. If you can change an element into separate parts, you can use SelectMany. If you have an array of strings separated by delimiters, you can use SelectMany after splitting them.
Then The final result is an array of all the individual parts of all the strings.
A summary. This method collapses a collection of elements. It yields a flattened representation of elements. We simplify data representations by transforming each element into its parts.
Dot Net Perls is a collection of tested code examples. Pages are continually updated to stay current, with code correctness a top priority.
Sam Allen is passionate about computer languages. In the past, his work has been recommended by Apple and Microsoft and he has studied computers at a selective university in the United States.
This page was last updated on Nov 20, 2022 (edit).