I have a list of list of strings:
var list = new List<string> {"apples","peaches", "mango"};
Is there a way to iterate through the list and display the items in a console window without using foreach loop may be by using lambdas and delegates.
I would like to the output to be like below each in a new line:
The folowing fruits are available:
apples
peaches
mango
You can use String.Join to concatenate all lines:
string lines = string.Join(Environment.NewLine, list);
Console.Write(lines);
By far the most obvious is the good old-fashioned for loop:
for (var i = 0; i < list.Count; i++)
{
System.Console.WriteLine("{0}", list[i]);
}
for (int i = 0; i < list.Count; i++)
{
Console.WriteLine(list[i])
}
I love this particular aspect of linq
list.ForEach(Console.WriteLine);
It's not using a ForEach loop per se as it uses the ForEach actor. But hey it's still an iteration.
List<T>.ForEach is not a LINQ method, but just a plain old regular List<T> method; LINQ methods are never purely called for their side effects as List<T>.ForEach is.
You can use List<T>.ForEach method, which actually is not part of LINQ, but looks like it was:
list.ForEach(i => Console.WriteLine(i));
Well, you could try the following:
Debug.WriteLine("The folowing fruits are available:");
list.ForEach(f => Debug.WriteLine(f));
It's the very equivalent of a foreach loop, but not using the foreach keyword,
That being said, I don't know why you'd want to avoid a foreach loop when iterating over a list of objects.
There are three ways to iterate a List:
//1 METHOD
foreach (var item in myList)
{
Console.WriteLine("Id is {0}, and description is {1}", item.id, item.description);
}
//2 METHOD
for (int i = 0; i<myList.Count; i++)
{
Console.WriteLine("Id is {0}, and description is {1}", myList[i].id, myMoney[i].description);
}
//3 METHOD lamda style
myList.ForEach(item => Console.WriteLine("id is {0}, and description is {1}", item.id, item.description));
foreach?foreachnot satisfy them?