On 2/19/14, 6:42 AM, Daniel Murphy wrote:
"Steven Schveighoffer" wrote in message
news:op.xbhnw5rbeav7ka@stevens-macbook-pro.local...
It may not be mindless. Most people who want to handle the default
case do it. It's usually not so much "I didn't think of handling other
values," it's more "I never expect other values to come in, go away
annoying compiler error."
So why not put an assert(0) in instead of a break? Tell the compiler
that you're assuming there are no other possible values. This is
obviously the right thing to do here, and even if you ignore it the
compiler _is_ trying to help you.
Sometimes you don't care about other values, which is different than not
expecting other values. For example:
auto a = ...;
switch(a) {
case 1: a += 1;
case 2: a += 2;
// In other cases, leave "a" as is
}
