01-the-only-acceptable-for-loop.linq

<Query Kind="Program" />

/* The only acceptable `for` loop is the one that has only one statement in it's 
   body and does not need curly braces. In fact it should be enforced that loops 
   are defined without curly braces to make sure they always have single-statement
   bodies.
   
   Make the loop body a method in case it needs more statements. All dependencies
   should be parameters of that method.
   
   Still a `for` loop should only be used when the performance gain due to 
   in-place editing of collections really is needed. */

void Main() {
    var foos = new[] { new Foo(), null, new Foo() };
    EnsureAllInitialized(foos);
    foos.Dump();
}

void EnsureAllInitialized(Foo[] foos) {
    for (var i = 0; i < foos.Length; i++)
        foos[i] = foos[i] ?? new Foo();
}

class Foo { }