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

seq { 
    for i = 0 to 99 do
        if i = 66 then yield ()
}
|> Seq.tryItem 0
|> ignore