What is the use case for this weird switch mecanism

[Era Scarecrow]

On Wednesday, 31 October 2012 at 22:01:36 UTC, bearophile wrote:
> Chris Nicholson-Sauls:
>
>> There is also the trick of doing 'switch(val) with(EnumType) 
>> {...}'
>
> What about writing with(EnumType) switch(val) {...} ?

  Maybe... But a problem arises when it's function wide, and 
should be able to replace (hopefully) any block. Assuming there's 
no syntactical issues that may break other code.

int func()
with(EnumType) { //won't compile

}

int func() {
   with(EnumType) { //compiles but seems excessive when it doesn't 
need to...

   }
}

  But 'switch with' seems the proper way to put it in my mind.