test:zig

guide/language/inline-loops.zig

@@ -0,0 +1,14 @@
+const expect = @import("std").testing.expect;
+
+// inline loops are unrolled, and allow some things to happen that only work at compile time.
+// Here we use a for, but a while works similarly.
+
+test "inline for" {
+    const types = [_]type{ i32, f32, u8, bool };
+    var sum: usize = 0;
+    inline for (types) |T| sum += @sizeOf(T);
+    try expect(sum == 10);
+}
+
+// Using these for performance reasons is inadvisable unless you've tested that explicitly unrolling is faster;
+// the compiler tends to make better decisions here than you.