r.r

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.

enum r;
enum r;
enum r;
template r(string[] a)
@nogc nothrow extern (C)
static if(!(a.length == 0))
static if(!(a.length == 1))
enum r = r!(a[0..$ / 2]) ~ ", " ~ r!(a[$ / 2..$]);

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ssll commaSeparated r manifest constants

r