Question

For removing an object where a property equals a value which is faster?

foreach(object o in objects)
{
    if(o.name == "John Smith")
    {
         objects.Remove(o);
         break;
    }
}

or

objects.RemoveAll(o => o.Name == "John Smith");

Thanks!

EDIT:

I should have mentioned this is removing one object from the collection, then breaking out of the loop which prevents any errors you have described, although using a for loop with the count is the better option!

Answer 1

From a List<string> of 10,000 items, the speeds are:

• for loop: 110,000 ticks
• lambda: 1,000 ticks

From this information, we can conclude that the lambda expression is faster.

The source code I used can be found here.

Note that I substituted your foreach with a for loop, since we aren’t able to modify values within a foreach loop.