From 396dde530ef083618e6602229fe8f32384dc106a Mon Sep 17 00:00:00 2001
From: Timothy Warren <twarren@nabancard.com>
Date: Tue, 12 Feb 2019 12:35:49 -0500
Subject: [PATCH] Add old lady who swalled a fly example

---
 .idea/misc.xml                           |   1 +
 .idea/rust.iml                           |   5 +
 .idea/workspace.xml                      | 160 ++++++++++++-----------
 old_lady_who_swallowed_a_fly/Cargo.toml  |   7 +
 old_lady_who_swallowed_a_fly/src/main.rs |  74 +++++++++++
 5 files changed, 170 insertions(+), 77 deletions(-)
 create mode 100644 old_lady_who_swallowed_a_fly/Cargo.toml
 create mode 100644 old_lady_who_swallowed_a_fly/src/main.rs

diff --git a/.idea/misc.xml b/.idea/misc.xml
index f1a0458..7824de4 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -44,6 +44,7 @@
     <cargoProject FILE="$PROJECT_DIR$/macros/Cargo.toml" />
     <cargoProject FILE="$PROJECT_DIR$/pancakes/Cargo.toml" />
     <cargoProject FILE="$PROJECT_DIR$/hello/Cargo.toml" />
+    <cargoProject FILE="$PROJECT_DIR$/old_lady_who_swallowed_a_fly/Cargo.toml" />
   </component>
   <component name="ComposerJsonPluginSettings">
     <unboundedVersionInspectionSettings>
diff --git a/.idea/rust.iml b/.idea/rust.iml
index 2ed216a..952a6f9 100644
--- a/.idea/rust.iml
+++ b/.idea/rust.iml
@@ -177,6 +177,10 @@
       <sourceFolder url="file://$MODULE_DIR$/hello/examples" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/hello/tests" isTestSource="true" />
       <sourceFolder url="file://$MODULE_DIR$/hello/benches" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/old_lady_who_swallowed_a_fly/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/old_lady_who_swallowed_a_fly/examples" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/old_lady_who_swallowed_a_fly/tests" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/old_lady_who_swallowed_a_fly/benches" isTestSource="true" />
       <excludeFolder url="file://$MODULE_DIR$/add/add-one/target" />
       <excludeFolder url="file://$MODULE_DIR$/add/adder/target" />
       <excludeFolder url="file://$MODULE_DIR$/adder/target" />
@@ -204,6 +208,7 @@
       <excludeFolder url="file://$MODULE_DIR$/minigrep_v2/target" />
       <excludeFolder url="file://$MODULE_DIR$/modules/target" />
       <excludeFolder url="file://$MODULE_DIR$/mutex/target" />
+      <excludeFolder url="file://$MODULE_DIR$/old_lady_who_swallowed_a_fly/target" />
       <excludeFolder url="file://$MODULE_DIR$/oop/target" />
       <excludeFolder url="file://$MODULE_DIR$/pancakes/target" />
       <excludeFolder url="file://$MODULE_DIR$/pattern_matching/target" />
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 7ce4a57..c359113 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -15,23 +15,28 @@
   <component name="FileEditorManager">
     <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
       <file pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/hello/src/bin/main.rs">
+        <entry file="file://$PROJECT_DIR$/old_lady_who_swallowed_a_fly/src/main.rs">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="336">
-              <caret line="21" column="31" selection-start-line="21" selection-start-column="31" selection-end-line="21" selection-end-column="31" />
+            <state relative-caret-position="768">
+              <caret line="48" column="10" lean-forward="true" selection-start-line="48" selection-start-column="10" selection-end-line="48" selection-end-column="10" />
             </state>
           </provider>
         </entry>
       </file>
       <file pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/hello/src/lib.rs">
+        <entry file="file://$PROJECT_DIR$/loops/src/main.rs">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="1183">
-              <caret line="83" lean-forward="true" selection-start-line="83" selection-end-line="83" />
-              <folding>
-                <element signature="e#194#195#0" expanded="true" />
-                <element signature="e#211#212#0" expanded="true" />
-              </folding>
+            <state relative-caret-position="944">
+              <caret line="59" selection-start-line="59" selection-end-line="59" />
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file pinned="false" current-in-tab="false">
+        <entry file="file://$PROJECT_DIR$/twelve_days_of_christmas/src/main.rs">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="752">
+              <caret line="47" selection-start-line="47" selection-end-line="47" />
             </state>
           </provider>
         </entry>
@@ -65,7 +70,6 @@
   <component name="IdeDocumentHistory">
     <option name="CHANGED_PATHS">
       <list>
-        <option value="$PROJECT_DIR$/minigrep/src/lib.rs" />
         <option value="$PROJECT_DIR$/minigrep/src/main.rs" />
         <option value="$PROJECT_DIR$/closures/src/main.rs" />
         <option value="$PROJECT_DIR$/closures/src/lib.rs" />
@@ -116,6 +120,7 @@
         <option value="$PROJECT_DIR$/hello/bin/main.rs" />
         <option value="$PROJECT_DIR$/hello/src/lib.rs" />
         <option value="$PROJECT_DIR$/hello/src/bin/main.rs" />
+        <option value="$PROJECT_DIR$/old_lady_who_swallowed_a_fly/src/main.rs" />
       </list>
     </option>
   </component>
@@ -126,10 +131,10 @@
     <other-services-enabled>false</other-services-enabled>
   </component>
   <component name="ProjectFrameBounds" extendedState="6">
-    <option name="x" value="1920" />
-    <option name="y" value="-438" />
-    <option name="width" value="1080" />
-    <option name="height" value="1897" />
+    <option name="x" value="1680" />
+    <option name="y" value="370" />
+    <option name="width" value="1050" />
+    <option name="height" value="877" />
   </component>
   <component name="ProjectLevelVcsManager" settingsEditedManually="true">
     <ConfirmationsSetting value="1" id="Add" />
@@ -172,18 +177,35 @@
             <path>
               <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
               <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
-              <item name="hello" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+              <item name="loops" type="9f88c78c:ScopeViewTreeModel$FileNode" />
             </path>
             <path>
               <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
               <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
-              <item name="hello" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+              <item name="loops" type="9f88c78c:ScopeViewTreeModel$FileNode" />
               <item name="src" type="9f88c78c:ScopeViewTreeModel$FileNode" />
             </path>
             <path>
               <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
               <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
-              <item name="pancakes" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+              <item name="old_lady_who_swallowed_a_fly" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+            </path>
+            <path>
+              <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
+              <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
+              <item name="old_lady_who_swallowed_a_fly" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+              <item name="src" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+            </path>
+            <path>
+              <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
+              <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
+              <item name="twelve_days_of_christmas" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+            </path>
+            <path>
+              <item name="rust" type="3d21c010:ScopeViewTreeModel$ProjectNode" />
+              <item name="rust" type="2674bda8:ScopeViewTreeModel$GroupNode" />
+              <item name="twelve_days_of_christmas" type="9f88c78c:ScopeViewTreeModel$FileNode" />
+              <item name="src" type="9f88c78c:ScopeViewTreeModel$FileNode" />
             </path>
           </expand>
           <select />
@@ -193,7 +215,7 @@
   </component>
   <component name="PropertiesComponent">
     <property name="JavaScriptWeakerCompletionTypeGuess" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1549907921290" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1549991319219" />
     <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" />
@@ -227,7 +249,7 @@
       </list>
     </option>
   </component>
-  <component name="RunManager" selected="Cargo Command.Run hello">
+  <component name="RunManager" selected="Cargo Command.Run old_lady_who_swallowed_a_fly">
     <configuration name="&lt;template&gt;" type="TestNG" default="true" selected="false">
       <option name="MAIN_CLASS_NAME" />
       <option name="VM_PARAMETERS" value="-ea" />
@@ -256,16 +278,6 @@
       <envs />
       <method v="2" />
     </configuration>
-    <configuration name="Run advanced_traits" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
-      <option name="channel" value="DEFAULT" />
-      <option name="command" value="run --package advanced_traits --bin advanced_traits" />
-      <option name="allFeatures" value="false" />
-      <option name="nocapture" value="false" />
-      <option name="backtrace" value="SHORT" />
-      <option name="workingDirectory" value="file://$PROJECT_DIR$/advanced_traits" />
-      <envs />
-      <method v="2" />
-    </configuration>
     <configuration name="Run advanced_types" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
       <option name="channel" value="DEFAULT" />
       <option name="command" value="run --package advanced_types --bin advanced_types" />
@@ -286,6 +298,16 @@
       <envs />
       <method v="2" />
     </configuration>
+    <configuration name="Run old_lady_who_swallowed_a_fly" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
+      <option name="channel" value="DEFAULT" />
+      <option name="command" value="run --package old_lady_who_swallowed_a_fly --bin old_lady_who_swallowed_a_fly" />
+      <option name="allFeatures" value="false" />
+      <option name="nocapture" value="false" />
+      <option name="backtrace" value="SHORT" />
+      <option name="workingDirectory" value="file://$PROJECT_DIR$/old_lady_who_swallowed_a_fly" />
+      <envs />
+      <method v="2" />
+    </configuration>
     <configuration name="Run pancakes" type="CargoCommandRunConfiguration" factoryName="Cargo Command" temporary="true">
       <option name="channel" value="DEFAULT" />
       <option name="command" value="run --package pancakes --bin pancakes" />
@@ -305,11 +327,11 @@
     </configuration>
     <recent_temporary>
       <list>
+        <item itemvalue="Cargo Command.Run old_lady_who_swallowed_a_fly" />
         <item itemvalue="Cargo Command.Run hello" />
         <item itemvalue="Cargo Command.Run pancakes" />
         <item itemvalue="Cargo Command.Run advanced_functions" />
         <item itemvalue="Cargo Command.Run advanced_types" />
-        <item itemvalue="Cargo Command.Run advanced_traits" />
       </list>
     </recent_temporary>
   </component>
@@ -346,11 +368,11 @@
     </history-entry>
   </component>
   <component name="ToolWindowManager">
-    <frame x="1920" y="-438" width="1080" height="1897" extended-state="6" />
+    <frame x="1680" y="-410" width="1050" height="1657" extended-state="6" />
     <editor active="true" />
     <layout>
-      <window_info content_ui="combo" id="Project" order="0" sideWeight="0.4957483" visible="true" weight="0.2540132" />
-      <window_info id="Structure" order="1" sideWeight="0.5042517" side_tool="true" visible="true" weight="0.2540132" />
+      <window_info content_ui="combo" id="Project" order="0" sideWeight="0.49522156" visible="true" weight="0.26141885" />
+      <window_info id="Structure" order="1" sideWeight="0.50477844" side_tool="true" visible="true" weight="0.26141885" />
       <window_info id="Image Layers" order="2" />
       <window_info id="Designer" order="3" />
       <window_info id="Capture Tool" order="4" />
@@ -358,7 +380,7 @@
       <window_info id="Cargo" order="6" sideWeight="0.49791494" weight="0.3286119" />
       <window_info anchor="bottom" id="Message" order="0" />
       <window_info anchor="bottom" id="Find" order="1" weight="0.32979318" />
-      <window_info anchor="bottom" id="Run" order="2" weight="0.2571269" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.25693995" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
       <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
@@ -366,7 +388,7 @@
       <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 active="true" anchor="bottom" id="Terminal" order="10" visible="true" weight="0.34264952" />
+      <window_info anchor="bottom" id="Terminal" order="10" weight="0.34264952" />
       <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" />
@@ -380,36 +402,6 @@
     <option name="version" value="1" />
   </component>
   <component name="editorHistoryManager">
-    <entry file="file://$PROJECT_DIR$/adder/tests/integration_test.rs">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="144">
-          <caret line="9" lean-forward="true" selection-start-line="9" selection-end-line="9" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/adder/src/lib.rs">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="1056">
-          <caret line="66" column="5" selection-start-line="66" selection-start-column="5" selection-end-line="66" selection-end-column="5" />
-          <folding>
-            <element signature="e#251#252#0" expanded="true" />
-            <element signature="e#263#264#0" expanded="true" />
-            <element signature="e#304#305#0" expanded="true" />
-            <element signature="e#338#339#0" expanded="true" />
-            <element signature="e#1036#1037#0" expanded="true" />
-            <element signature="e#1077#1078#0" expanded="true" />
-            <element signature="e#1119#1120#0" expanded="true" />
-            <element signature="e#1160#1161#0" expanded="true" />
-            <element signature="e#1196#1197#0" expanded="true" />
-            <element signature="e#1241#1242#0" expanded="true" />
-            <element signature="e#1191#1192#0" expanded="true" />
-            <element signature="e#1232#1233#0" expanded="true" />
-            <element signature="e#1520#1521#0" expanded="true" />
-            <element signature="e#1551#1552#0" expanded="true" />
-          </folding>
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/minigrep/poem.txt">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="128">
@@ -587,13 +579,6 @@
         </state>
       </provider>
     </entry>
-    <entry file="file://$PROJECT_DIR$/twelve_days_of_christmas/src/main.rs">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="144">
-          <caret line="9" column="25" selection-start-line="9" selection-start-column="25" selection-end-line="9" selection-end-column="25" />
-        </state>
-      </provider>
-    </entry>
     <entry file="file://$PROJECT_DIR$/gui/src/main.rs">
       <provider selected="true" editor-type-id="text-editor">
         <state relative-caret-position="576">
@@ -802,8 +787,8 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/hello/src/lib.rs">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="1183">
-          <caret line="83" lean-forward="true" selection-start-line="83" selection-end-line="83" />
+        <state relative-caret-position="400">
+          <caret line="25" column="39" selection-start-line="25" selection-start-column="39" selection-end-line="25" selection-end-column="39" />
           <folding>
             <element signature="e#194#195#0" expanded="true" />
             <element signature="e#211#212#0" expanded="true" />
@@ -813,8 +798,29 @@
     </entry>
     <entry file="file://$PROJECT_DIR$/hello/src/bin/main.rs">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="336">
-          <caret line="21" column="31" selection-start-line="21" selection-start-column="31" selection-end-line="21" selection-end-column="31" />
+        <state relative-caret-position="768">
+          <caret line="48" selection-start-line="48" selection-end-line="48" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/twelve_days_of_christmas/src/main.rs">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="752">
+          <caret line="47" selection-start-line="47" selection-end-line="47" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/loops/src/main.rs">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="944">
+          <caret line="59" selection-start-line="59" selection-end-line="59" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/old_lady_who_swallowed_a_fly/src/main.rs">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="768">
+          <caret line="48" column="10" lean-forward="true" selection-start-line="48" selection-start-column="10" selection-end-line="48" selection-end-column="10" />
         </state>
       </provider>
     </entry>
diff --git a/old_lady_who_swallowed_a_fly/Cargo.toml b/old_lady_who_swallowed_a_fly/Cargo.toml
new file mode 100644
index 0000000..c56eb95
--- /dev/null
+++ b/old_lady_who_swallowed_a_fly/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "old_lady_who_swallowed_a_fly"
+version = "0.1.0"
+authors = ["Timothy Warren <twarren@nabancard.com>"]
+edition = "2018"
+
+[dependencies]
diff --git a/old_lady_who_swallowed_a_fly/src/main.rs b/old_lady_who_swallowed_a_fly/src/main.rs
new file mode 100644
index 0000000..83d2605
--- /dev/null
+++ b/old_lady_who_swallowed_a_fly/src/main.rs
@@ -0,0 +1,74 @@
+#[derive(Clone, Debug)]
+enum Flow { Every, Once, End }
+use Flow::*;
+
+#[derive(Clone, Debug)]
+struct Verse {
+    animal: String,
+    flow_type: Flow,
+    aside: String,
+}
+
+impl Verse {
+    pub fn new(animal: &str, flow_type: Flow, aside: &str) -> Verse {
+        Verse {
+            animal: String::from(animal),
+            flow_type,
+            aside: String::from(aside)
+        }
+    }
+}
+
+fn swallowed_a(verse: &Verse) {
+    println!("\nThere was an old lady who swallowed a {};\n{}", verse.animal, verse.aside);
+}
+
+fn cumulative_refrain(slice: &[Verse]) {
+    for n in 0..slice.len() {
+        let repeat = &slice[n];
+
+        if n != (slice.len() - 1) {
+            let prev = &slice[n + 1];
+            println!("\tShe swallowed the {} to catch the {};", repeat.animal, prev.animal);
+
+            if let Every = prev.flow_type {
+                println!("\t{}", prev.aside);
+            }
+        }
+    }
+}
+
+fn print_verses(animals: [Verse;8]) {
+    for index in 0..animals.len() {
+        let verse = &animals[index];
+        swallowed_a(&verse);
+
+        // End early on the last verse
+        if let End = verse.flow_type {
+            return
+        };
+
+        if index > 0 {
+            let slice = &animals[0..=index];
+            let mut slice = slice.to_vec();
+            slice.reverse();
+
+            cumulative_refrain(&slice);
+        }
+    }
+}
+
+fn main() {
+    let animals = [
+        Verse::new("fly", Every, "I don't know why she swallowed a fly - perhaps she'll die!"),
+        Verse::new("spider", Every, "That wriggled and jiggled and tickled inside her!"),
+        Verse::new("bird", Once, "How absurd to swallow a bird!"),
+        Verse::new("cat", Once, "Imagine that! She swallowed a cat!"),
+        Verse::new("dog", Once, "What a hog, to swallow a dog!"),
+        Verse::new("goat", Once, "She just opened her throat and swallowed a goat!"),
+        Verse::new("cow", Once, "I don't know how she swallowed a cow!"),
+        Verse::new("horse", End, "She's dead of course!"),
+    ];
+
+    print_verses(animals);
+}