F# break from while loop

Question

There is any way to do it like C/C#?

For example (C# style)

for (int i = 0; i < 100; i++)
{
   if (I == 66)
       break;
} 

Answer 1

Try this:

exception BreakException

try
    for i = 0 to 99 do
      if i = 66 then
        raise BreakException
with BreakException -> ()

I know that some folks don't like to use exceptions. But it has merits.

• You don't have to think about complicated recursive function. Of cause you can do that, but sometimes it is unnecessarily bothersome and using exception is simpler.

• This method allows you to break at halfway of the loop body. (Break "flag" method is simple too but it only allows to break at the end of the loop body.)

• You can easily escape from nested loop.