assert and enforce both compiled out with -release

[Ali Çehreli]

On 01/27/2018 05:52 AM, kdevel wrote:
 > https://dlang.org/phobos/std_exception.html#enforce states:
 >
 > | Also, do not use enforce inside of contracts (i.e. inside of in and
 > out blocks
 > | and invariants), because they will be compiled out when compiling with
 > -release.
 > | Use assert in contracts.
 >
 > But assert is also ignored in release mode:

The documentation is not clear. "they will be compiled out" means 
"contracts are compiled out". So, an enforce() would disappear if it's 
inside such a block, which should not be what the programmer wants for 
an enforce().

Fixed it through the "Improve this page" link on that Phobos page:

   https://github.com/dlang/phobos/blob/master/std/exception.d

Ali