diff --git a/.idea/vcs.xml b/.idea/vcs.xml
index d2ab9f2..d362d9c 100644
--- a/.idea/vcs.xml
+++ b/.idea/vcs.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
     <mapping directory="$PROJECT_DIR$/branches" vcs="Git" />
     <mapping directory="$PROJECT_DIR$/ctof" vcs="Git" />
     <mapping directory="$PROJECT_DIR$/enums" vcs="Git" />
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index da0632f..8a3748f 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ChangeListManager">
-    <list default="true" id="c8f42924-1cd2-4b1c-bcff-602a3368bb16" name="Default Changelist" comment="" />
+    <list default="true" id="c8f42924-1cd2-4b1c-bcff-602a3368bb16" name="Default Changelist" comment="">
+      <change beforePath="$PROJECT_DIR$/.idea/vcs.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/vcs.xml" afterDir="false" />
+    </list>
     <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -10,24 +12,19 @@
   </component>
   <component name="FileEditorManager">
     <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
-      <file pinned="false" current-in-tab="false">
+      <file pinned="false" current-in-tab="true">
         <entry file="file://$PROJECT_DIR$/enums/src/main.rs">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="48">
-              <caret line="3" selection-start-line="3" selection-end-line="3" />
+            <state>
+              <caret column="15" selection-start-column="15" selection-end-column="15" />
               <folding>
-                <element signature="e#10#11#0" expanded="true" />
-                <element signature="e#43#44#0" expanded="true" />
+                <element signature="e#1331#1332#0" expanded="true" />
+                <element signature="e#1364#1365#0" expanded="true" />
               </folding>
             </state>
           </provider>
         </entry>
       </file>
-      <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/.gitignore">
-          <provider selected="true" editor-type-id="text-editor" />
-        </entry>
-      </file>
     </leaf>
   </component>
   <component name="FindInProjectRecents">
@@ -56,6 +53,7 @@
         <option value="$PROJECT_DIR$/structs/src/main.rs" />
         <option value="$PROJECT_DIR$/rectangles/src/main.rs" />
         <option value="$PROJECT_DIR$/.gitignore" />
+        <option value="$PROJECT_DIR$/enums/src/main.rs" />
       </list>
     </option>
   </component>
@@ -96,7 +94,7 @@
   </component>
   <component name="PropertiesComponent">
     <property name="JavaScriptWeakerCompletionTypeGuess" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1548875930471" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1548877775987" />
     <property name="javascript.nodejs.core.library.configured.version" value="7.1.0" />
     <property name="js.eslint.eslintPackage" value="$USER_HOME$/.yarn-config/global/node_modules/.bin/eslint" />
     <property name="js.eslint.nodeInterpreter" value="project" />
@@ -214,8 +212,8 @@
     <frame x="1920" y="-438" width="1080" height="1897" extended-state="0" />
     <editor active="true" />
     <layout>
-      <window_info active="true" content_ui="combo" id="Project" order="0" sideWeight="0.4970809" visible="true" weight="0.2540132" />
-      <window_info id="Structure" order="1" sideWeight="0.5029191" side_tool="true" visible="true" weight="0.2540132" />
+      <window_info active="true" content_ui="combo" id="Project" order="0" sideWeight="0.49748462" visible="true" weight="0.2540132" />
+      <window_info id="Structure" order="1" sideWeight="0.5025154" side_tool="true" visible="true" weight="0.2540132" />
       <window_info id="Image Layers" order="2" />
       <window_info id="Designer" order="3" />
       <window_info id="Capture Tool" order="4" />
@@ -231,7 +229,7 @@
       <window_info anchor="bottom" id="Docker" order="7" show_stripe_button="false" />
       <window_info anchor="bottom" id="Version Control" order="8" />
       <window_info anchor="bottom" id="Inspection Results" order="9" weight="0.32979318" />
-      <window_info anchor="bottom" id="Terminal" order="10" visible="true" weight="0.32979318" />
+      <window_info anchor="bottom" id="Terminal" order="10" weight="0.32979318" />
       <window_info anchor="bottom" id="Event Log" order="11" side_tool="true" />
       <window_info anchor="right" id="Commander" order="0" weight="0.4" />
       <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
@@ -345,19 +343,23 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/.gitignore">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="704">
+          <caret line="44" lean-forward="true" selection-start-line="44" selection-end-line="44" />
+        </state>
+      </provider>
+    </entry>
     <entry file="file://$PROJECT_DIR$/enums/src/main.rs">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="48">
-          <caret line="3" selection-start-line="3" selection-end-line="3" />
+        <state>
+          <caret column="15" selection-start-column="15" selection-end-column="15" />
           <folding>
-            <element signature="e#10#11#0" expanded="true" />
-            <element signature="e#43#44#0" expanded="true" />
+            <element signature="e#1331#1332#0" expanded="true" />
+            <element signature="e#1364#1365#0" expanded="true" />
           </folding>
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/.gitignore">
-      <provider selected="true" editor-type-id="text-editor" />
-    </entry>
   </component>
 </project>
\ No newline at end of file
diff --git a/enums/src/main.rs b/enums/src/main.rs
index e7a11a9..fb6ee8d 100644
--- a/enums/src/main.rs
+++ b/enums/src/main.rs
@@ -1,3 +1,95 @@
+#[derive(Debug)]
+enum UsState {
+    Alabama,
+    Alaska,
+    Arizona,
+    Arkansaw,
+    California,
+    Colorado,
+    Connecticut,
+    Delaware,
+    Florida,
+    Georgia,
+    Hawaii,
+    Idaho,
+    Illinois,
+    Indianan,
+    Iowa,
+    Kansas,
+    Kentucky,
+    Louisiana,
+    Maine,
+    Maryland,
+    Massachusetts,
+    Michigan,
+    Minnesota,
+    Mississippi,
+    Missouri,
+    Montana,
+    Nebraska,
+    Nevada,
+    New_Hampshire,
+    New_Jersey,
+    New_Mexico,
+    New_York,
+    North_Carolina,
+    North_Dakota,
+    Ohio,
+    Oklahoma,
+    Oregon,
+    Pennsylvania,
+    Rhode_Island,
+    South_Carolina,
+    South_Dakota,
+    Tennessee,
+    Texas,
+    Utah,
+    Vermont,
+    Virginia,
+    Washington,
+    West_Virginia,
+    Wisconsin,
+    Wyoming,
+}
+
+enum Coin {
+    Penny,
+    Nickel,
+    Dime,
+    Quarter(UsState),
+}
+
+fn value_in_cents(coin: Coin) -> u32 {
+    match coin {
+        Coin::Penny => {
+            println!("Lucky penny!");
+            1
+        },
+        Coin::Nickel => 5,
+        Coin::Dime => 10,
+        Coin::Quarter(state) => {
+            println!("State quarter from {:?}!", state);
+            25
+        },
+    }
+}
+
+fn count_non_quarters(count: &mut u32, coin: Coin) {
+    // If let is like matching on one condition of a match statement
+    if let Coin::Quarter(state) = coin {
+        println!("State quarter from {:?}!", state);
+    } else {
+        count += 1;
+    }
+}
+
+fn plus_one(x: Option<i32>) -> Option<i32> {
+    match x {
+        None => None, // Match is exhaustive, must define the 'None' case
+        Some(i) => Some(i + 1),
+    }
+}
+
 fn main() {
     println!("Hello, world!");
 }