Can all 'for' loops be replaced with a LINQ statement?

Question

Is it possible to write the following \'foreach\' as a LINQ statement, and I guess the more general question can any for loop be replaced by a LINQ statement.

I\'m not i

Answer 1

The specific loop in your question can be done declaratively like this:

var result = ListOfResources
            .Select(r => r.Id.ToString())
            .Aggregate(new StringBuilder(), (sb, s) => sb.Append(sb.Length > 0 ? ", " : String.Empty).Append(s))
            .ToString(); 

As to performance, you can expect a performance drop but this is acceptable for most applications.