On 2020-03-07 16:41:47 +0000, MoonlightSentinel said:
On Saturday, 7 March 2020 at 16:30:59 UTC, Robert M. Münch wrote:
Is this possible at all?
You can use an anonymous lambda to build the string in CTFE:
------------------------------------------
struct S {
int a;
bool b;
}
import std;
enum string sql = {
string s = "CREATE TABLE data(";
static foreach(f; FieldNameTuple!S) {
s ~= f ~ ",";
}
s ~= ");";
return s;
} ();
pragma(msg, sql);
------------------------------------------
This prints "CREATE TABLE data(a, b);"
Nice... is the enum a so called "manifest constant" for which the
initializer is evaluated at compile time?
OT: The pragma seems to print the string twice... at least here on my side.
OT2: Looks like I have to read through the language spec again... and
most likely over and over again, to have all these tricks at my
finger-tips.
--
Robert M. Münch
http://www.saphirion.com
smarter | better | faster
