From 8e8ec077e2e15af55898973b87e6bd2228d99457 Mon Sep 17 00:00:00 2001
From: Yuval Langer <yuval.langer@gmail.com>
Date: Mon, 17 Jun 2019 23:00:18 +0300
Subject: [PATCH 1/2] Put code in a function.

---
 docs/tutorials/src/02_hello_world.md | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/docs/tutorials/src/02_hello_world.md b/docs/tutorials/src/02_hello_world.md
index 3f927f63a..91c4ff4bd 100644
--- a/docs/tutorials/src/02_hello_world.md
+++ b/docs/tutorials/src/02_hello_world.md
@@ -94,9 +94,11 @@ need to create a world in which to store all of our components.
 ```rust,ignore
 use specs::{World, WorldExt, Builder};
 
-let mut world = World::new();
-world.register::<Position>();
-world.register::<Velocity>();
+fn the_world(){
+    let mut world = World::new();
+    world.register::<Position>();
+    world.register::<Velocity>();
+}
 ```
 
 This will create component storages for `Position`s and `Velocity`s.

From acb01a03cc2ef2ba54fed8a1692d615f0b03d87a Mon Sep 17 00:00:00 2001
From: Yuval Langer <yuval.langer@gmail.com>
Date: Sat, 20 Jul 2019 07:12:00 +0300
Subject: [PATCH 2/2] Put code in function.

---
 docs/tutorials/src/02_hello_world.md | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/docs/tutorials/src/02_hello_world.md b/docs/tutorials/src/02_hello_world.md
index 91c4ff4bd..6a1e1f13b 100644
--- a/docs/tutorials/src/02_hello_world.md
+++ b/docs/tutorials/src/02_hello_world.md
@@ -175,9 +175,11 @@ them. To execute the system, you can use `RunNow` like this:
 ```rust,ignore
 use specs::RunNow;
 
-let mut hello_world = HelloWorld;
-hello_world.run_now(&world);
-world.maintain();
+fn run_the_system() {
+    let mut hello_world = HelloWorld;
+    hello_world.run_now(&world);
+    world.maintain();
+}
 ```
 
 The `world.maintain()` is not completely necessary here. Calling maintain should be done in general, however.