On 07/31/2018 09:17 AM, Shachar Shemesh wrote:
I'm trying to figure out what's the signature of the built-in assert. It
does not seem that I can define a similar function myself.
Looks like you can do it with a "lazy variadic function" [1], but it's
not pretty:
----
alias Dg = string delegate() @nogc nothrow;
void myAssert(bool cond, Dg[1] msg_dg ...) @nogc nothrow
{
import core.stdc.stdio;
if (!cond)
{
string msg = msg_dg[0]();
printf("%*s\n", msg.length, msg.ptr);
}
}
----
[1] https://dlang.org/spec/function.html#lazy_variadic_functions
