Question

I defined a structure:

public struct STRUC
{
    public int field1;
    public int field2;
    ...
    public int fieldn;
}

Now, I have a list of this struct List<STRUC> l; and I want to create an array taking the field2 from each STRUC in the list l.

For sure with an easy for-loop I’m done:

int [] arr = new int[l.Count]; 

for(int i=0; i<l.Count; i++)
{
     arr[i] = l[i].field2;
}

but I would like to do it with a lambda.

Answer 1

You just need Select and ToArray:

int[] arr = l.Select(s => s.field2).ToArray();