From 969507757c5d0119489726acd1e2e7de6f7c0209 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Mon, 14 Oct 2024 19:58:33 +0800
Subject: [PATCH] fixes vtable documentation in tut2

ref https://forum.nim-lang.org/t/12537#77311
---
 doc/tut2.md | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/doc/tut2.md b/doc/tut2.md
index 1b59288d5ba6..c7f60abc377d 100644
--- a/doc/tut2.md
+++ b/doc/tut2.md
@@ -327,10 +327,12 @@ As the example demonstrates, invocation of a multi-method cannot be ambiguous:
 Collide 2 is preferred over collide 1 because the resolution works from left to
 right. Thus `Unit, Thing` is preferred over `Thing, Unit`.
 
-**Performance note**: Nim does not produce a virtual method table, but
-generates dispatch trees. This avoids the expensive indirect branch for method
-calls and enables inlining. However, other optimizations like compile time
-evaluation or dead code elimination do not work with methods.
+**Performance note**: Nim generates dispatch trees for methods by default.
+With `--experimental:vtables`, it also provides an option to generate
+a virtual method table for methods,
+which tends to produce better performance in general, 
+especially for deep object hierarchies.
+However, other optimizations like compile time evaluation or dead code elimination do not work with methods.
 
 
 Exceptions