How to remove elements from an array

Question

Hi I\'m working on some legacy code that goes something along the lines of

for(int i = results.Count-1; i >= 0; i--)
{
  if(someCondition)
  {
     result         


        

Answer 1

May I suggest a somewhat more functional alternative to your current code:

Instead of modifying the existing array one item at a time, you could derive a new one from it and then replace the whole array as an "atomic" operation once you're done:

The easy way (no LINQ, but very similar):

Predicate filter = delegate(T item) { return !someCondition; };

results = Array.FindAll(results, filter);
// with LINQ, you'd have written: results = results.Where(filter);

where T is the type of the items in your results array.

---

A somewhat more explicit alternative:

var newResults = new List();
foreach (T item in results)
{
    if (!someCondition)
    {
        newResults.Add(item);
    }
}
results = newResults.ToArray();