From b42150b922f2b65560065f7688505deacb58ac2d Mon Sep 17 00:00:00 2001
From: RogueNemo <129790473+RogueNemo@users.noreply.github.com>
Date: Thu, 11 May 2023 14:49:21 -0500
Subject: [PATCH] Update lambdas.md

https://stackoverflow.com/questions/76223960/what-is-mutex-wrapped/
---
 docs/cpp/lambdas.md | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/docs/cpp/lambdas.md b/docs/cpp/lambdas.md
index 5cc62dc2..9af750f0 100644
--- a/docs/cpp/lambdas.md
+++ b/docs/cpp/lambdas.md
@@ -508,16 +508,19 @@ A strong reason to use generic lambdas is for visiting syntax.
 
 ```cpp
 boost::variant<int, double> value;
-apply_visitor(value, [&](auto&& e){
-  std::cout << e;
-});
+boost::apply_visitor(
+  [&](auto&& e){
+    std::cout << e;
+  }, 
+  value
+);
 
 ```
 
 Here we are visiting in a polymorphic manner; but in other contexts, the names of the type we are passing isn't interesting:
 
 ```cpp
-mutex_wrapped<std::ostream&> os = std::cout;
+mutex_wrapped<std::ostream&> os(std::cout);
 os.write([&](auto&& os){
   os << "hello world\n";
 });