Just another update

Task/Compile-time-calculation/D/compile-time-calculation-1.d

@@ -1,8 +1,6 @@
-import core.stdc.stdio;
-
-long fact(long x) {
+long fact(in long x) pure nothrow @nogc {
     long result = 1;
-    foreach (i; 2 .. x + 1)
+    foreach (immutable i; 2 .. x + 1)
         result *= i;
     return result;
 }
@@ -11,5 +9,7 @@ void main() {
     // enum means "compile-time constant", it forces CTFE.
     enum fact10 = fact(10);
 
+    import core.stdc.stdio;
+
     printf("%ld\n", fact10);
 }

Task/Compile-time-calculation/Oberon-2/compile-time-calculation.oberon-2

@@ -0,0 +1,8 @@
+MODULE CompileTime;
+IMPORT
+  Out;
+CONST
+    tenfac = 10*9*8*7*6*5*4*3*2;
+BEGIN
+  Out.String("10! =");Out.LongInt(tenfac,0);Out.Ln
+END CompileTime.