Restart a foreach loop in C#?

Question

How can I restart a foreach loop in C#??

For example:

Action a;
foreach(Constrain c in Constrains)
{
   if(!c.Allows(a))
   {
      a.Change         


        

Answer 1

Although a very old thread - none of the answers paid due attention to the semantics of that code:

• You have a chain of constraints on a
• If a breaks any of them, try another a and push that through the chain.

That is, a.Change() should be separated from the constraint checking loop, also adhering to the CQS principle:

while (!MeetsConstraints(a))
{
    a.Change();
}

bool MeetsConstraints(Thing a)
{
    return Constraints.All(c => c.Allows(a));
}

No goto, no ugly loops, just simple and clean.