How to replace for-loops with a functional statement in C#?

Question

A colleague once said that God is killing a kitten every time I write a for-loop.

When asked how to avoid for-loops, his answer was to use a functional language. However

Answer 1

1. For loops are not bad. There are many very valid reasons to keep a for loop.
2. You can often "avoid" a for loop by reworking it using LINQ in C#, which provides a more declarative syntax. This can be good or bad depending on the situation:

Compare the following:

var collection = GetMyCollection();
for(int i=0;i

vs foreach:

var collection = GetMyCollection();
foreach(var item in collection)
{
     if(item.MyValue == someValue)
          return item;
}

vs. LINQ:

var collection = GetMyCollection();
return collection.FirstOrDefault(item => item.MyValue == someValue);

Personally, all three options have their place, and I use them all. It's a matter of using the most appropriate option for your scenario.