Detect if variable defined

[Steven Schveighoffer]

On 9/29/17 2:03 PM, Joseph wrote:
> static if ()
> {
>   enum x;
> }
> 
> static if (isDefined!x)
> {
> }
> 
> What's the correct way to check if a variable has been defined? (note x 
> may or may not be defined above. I need to know if it is)

Check to see that it has a type:

static if(is(typeof(x)))
{
}

-Steve