From 82cb669cd77e0b394be0161ea8c688aa78f955d6 Mon Sep 17 00:00:00 2001
From: Ryan Plant <ryan@ryanplant.net>
Date: Tue, 26 Jan 2016 11:44:47 +1100
Subject: [PATCH 1/4] Fix typo

---
 ruby.html.markdown | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ruby.html.markdown b/ruby.html.markdown
index 3eed2d3c..24dd788a 100644
--- a/ruby.html.markdown
+++ b/ruby.html.markdown
@@ -285,7 +285,7 @@ hash.each do |key, value|
   puts "#{key} is #{value}"
 end
 
-# If you still need and index you can use "each_with_index" and define an index
+# If you still need an index you can use "each_with_index" and define an index
 # variable
 array.each_with_index do |element, index|
   puts "#{element} is number #{index} in the array"

From 0f5c74a79f328aa1b385a2dae3389d48faa47ce5 Mon Sep 17 00:00:00 2001
From: Ryan Plant <ryan@ryanplant.net>
Date: Tue, 26 Jan 2016 11:52:06 +1100
Subject: [PATCH 2/4] Add note on destructuring assignment

---
 ruby.html.markdown | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ruby.html.markdown b/ruby.html.markdown
index 24dd788a..6743de6b 100644
--- a/ruby.html.markdown
+++ b/ruby.html.markdown
@@ -411,6 +411,15 @@ def guests(*array)
   array.each { |guest| puts guest }
 end
 
+# If a method returns an array, you can use destructuring assignment
+def foods
+    ['pancake', 'sandwich', 'quesadilla']
+end
+breakfast, lunch, dinner = foods
+breakfast # 'pancake'
+dinner # 'quesadilla'
+
+
 # Define a class with the class keyword
 class Human
 

From b9c1502cab19360bda496df5a2503a198f7c4f50 Mon Sep 17 00:00:00 2001
From: Ryan Plant <ryan@ryanplant.net>
Date: Tue, 26 Jan 2016 11:58:46 +1100
Subject: [PATCH 3/4] Add note on method naming conventions

---
 ruby.html.markdown | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/ruby.html.markdown b/ruby.html.markdown
index 6743de6b..bdad4d06 100644
--- a/ruby.html.markdown
+++ b/ruby.html.markdown
@@ -419,6 +419,19 @@ breakfast, lunch, dinner = foods
 breakfast # 'pancake'
 dinner # 'quesadilla'
 
+# By convention, all methods that return booleans end with a question mark
+5.even? # false
+5.odd? # true
+
+# And if a method ends with an exclamation mark, it does something destructive
+# like mutate the receiver. Many methods have a ! version to make a change, and
+# a non-! version to just return a new changed version
+company_name = "Dunder Mifflin"
+company_name.upcase #=> "DUNDER MIFFLIN"
+company_name #=> "Dunder Mifflin"
+company_name.upcase! # we're mutating company_name this time!
+company_name #=> "DUNDER MIFFLIN"
+
 
 # Define a class with the class keyword
 class Human

From 236cc1c14c71e561d9ab715079f6974a86fad271 Mon Sep 17 00:00:00 2001
From: Ryan Plant <ryan@ryanplant.net>
Date: Tue, 26 Jan 2016 11:59:08 +1100
Subject: [PATCH 4/4] Fix formatting on comments

---
 ruby.html.markdown | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ruby.html.markdown b/ruby.html.markdown
index bdad4d06..adf5ce81 100644
--- a/ruby.html.markdown
+++ b/ruby.html.markdown
@@ -416,8 +416,8 @@ def foods
     ['pancake', 'sandwich', 'quesadilla']
 end
 breakfast, lunch, dinner = foods
-breakfast # 'pancake'
-dinner # 'quesadilla'
+breakfast #=> 'pancake'
+dinner #=> 'quesadilla'
 
 # By convention, all methods that return booleans end with a question mark
 5.even? # false