<snapdata remixID="11992997"><project name="U3L1-ShoppingList_Empty to Students" app="Snap! 7, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><scenes select="1"><scene name="U3L1-ShoppingList_Empty to Students"><notes></notes><hidden></hidden><headers></headers><code></code><blocks><block-definition s="map %&apos;function&apos; over %&apos;lists&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%repRing"></input><input type="%mult%l"></input></inputs><script><block s="doWarp"><script><block s="doDeclareVariables"><list><l>mapone</l><l>mapmany</l></list></block><block s="doSetVar"><l>mapone</l><block s="reifyScript"><script><block s="doIf"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doReport"><block s="reportCONS"><block s="evaluate"><block var="function"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><block s="evaluate"><block var="mapone"/><list><block s="reportCDR"><block var="data"/></block></list></block></block></block></script><list><l>data</l></list></block></block><block s="doSetVar"><l>mapmany</l><block s="reifyScript"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportListItem"><l>1</l><block var="data lists"/></block></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doReport"><block s="reportCONS"><block s="evaluate"><block var="function"/><custom-block s="map %repRing over %mult%l"><block s="reifyReporter"><autolambda><block s="reportListItem"><l>1</l><l/></block></autolambda><list></list></block><list><block var="data lists"/></list></custom-block></block><block s="evaluate"><block var="mapmany"/><list><custom-block s="map %repRing over %mult%l"><block s="reifyReporter"><autolambda><block s="reportCDR"><l/></block></autolambda><list></list></block><list><block var="data lists"/></list></custom-block></list></block></block></block></script><list><l>data lists</l></list></block></block><block s="doIfElse"><custom-block s="empty? %l"><block s="reportCDR"><block var="lists"/></block></custom-block><script><block s="doReport"><block s="evaluate"><block var="mapone"/><list><block s="reportListItem"><l>1</l><block var="lists"/></block></list></block></block></script><script><block s="doReport"><block s="evaluate"><block var="mapmany"/><list><block var="lists"/></list></block></block></script></block></script></block></script></block-definition><block-definition s="empty? %&apos;data&apos;" type="predicate" category="lists"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportEquals"><block var="data"/><block s="reportNewList"><list></list></block></block></block></script></block-definition><block-definition s="keep items such that %&apos;pred&apos; from %&apos;data&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%predRing"></input><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doReport"><block s="reportNewList"><list></list></block></block></script></block><block s="doIfElse"><block s="evaluate"><block var="pred"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><script><block s="doReport"><block s="reportCONS"><block s="reportListItem"><l>1</l><block var="data"/></block><custom-block s="keep items such that %predRing from %l"><block var="pred"/><block s="reportCDR"><block var="data"/></block></custom-block></block></block></script><script><block s="doReport"><custom-block s="keep items such that %predRing from %l"><block var="pred"/><block s="reportCDR"><block var="data"/></block></custom-block></block></script></block></script></block></script></block-definition><block-definition s="combine with %&apos;function&apos; items of %&apos;data&apos;" type="reporter" category="lists"><header></header><code></code><translations></translations><inputs><input type="%repRing"></input><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportCDR"><block var="data"/></block></custom-block><script><block s="doReport"><block s="reportListItem"><l>1</l><block var="data"/></block></block></script></block><block s="doReport"><block s="evaluate"><block var="function"/><list><block s="reportListItem"><l>1</l><block var="data"/></block><custom-block s="combine with %repRing items of %l"><block var="function"/><block s="reportCDR"><block var="data"/></block></custom-block></list></block></block></script></block></script></block-definition><block-definition s="if %&apos;test&apos; then %&apos;true&apos; else %&apos;false&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%b"></input><input type="%anyUE"></input><input type="%anyUE"></input></inputs><script><block s="doIfElse"><block var="test"/><script><block s="doReport"><block s="evaluate"><block var="true"/><list></list></block></block></script><script><block s="doReport"><block s="evaluate"><block var="false"/><list></list></block></block></script></block></script></block-definition><block-definition s="for %&apos;i&apos; = %&apos;start&apos; to %&apos;end&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%n">1</input><input type="%n">10</input><input type="%cs"></input></inputs><script><block s="doDeclareVariables"><list><l>step</l><l>tester</l></list></block><block s="doIfElse"><block s="reportGreaterThan"><block var="start"/><block var="end"/></block><script><block s="doSetVar"><l>step</l><l>-1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportLessThan"><block var="i"/><block var="end"/></block></autolambda><list></list></block></block></script><script><block s="doSetVar"><l>step</l><l>1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportGreaterThan"><block var="i"/><block var="end"/></block></autolambda><list></list></block></block></script></block><block s="doSetVar"><l>i</l><block var="start"/></block><block s="doUntil"><block s="evaluate"><block var="tester"/><list></list></block><script><block s="doRun"><block var="action"/><list></list></block><block s="doChangeVar"><l>i</l><block var="step"/></block></script></block></script></block-definition><block-definition s="join words %&apos;words&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%mult%txt"></input></inputs><script><block s="doWarp"><script><block s="doIf"><custom-block s="empty? %l"><block s="reportCDR"><block var="words"/></block></custom-block><script><block s="doReport"><block s="reportListItem"><l>1</l><block var="words"/></block></block></script></block><block s="doReport"><block s="reportJoinWords"><list><block s="reportListItem"><l>1</l><block var="words"/></block><l> </l><custom-block s="join words %mult%txt"><block s="reportCDR"><block var="words"/></block></custom-block></list></block></block></script></block></script></block-definition><block-definition s="list $arrowRight sentence %&apos;data&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doWarp"><script><block s="doReport"><custom-block s="join words %mult%txt"><block var="data"/></custom-block></block></script></block></script></block-definition><block-definition s="sentence $arrowRight list %&apos;text&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%txt"></input></inputs><script><block s="doWarp"><script><block s="doReport"><block s="reportTextSplit"><block var="text"/><l><option>whitespace</option></l></block></block></script></block></script></block-definition><block-definition s="catch %&apos;tag&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%cs"></input></inputs><script><block s="doCallCC"><block s="reifyScript"><script><block s="doSetVar"><l>tag</l><block var="cont"/></block><block s="doRun"><block var="action"/><list></list></block></script><list><l>cont</l></list></block></block></script></block-definition><block-definition s="throw %&apos;cont&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">catchtag</input></inputs><script><block s="doRun"><block var="cont"/><list></list></block></script></block-definition><block-definition s="catch %&apos;tag&apos; %&apos;value&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%anyUE"></input></inputs><script><block s="doCallCC"><block s="reifyScript"><script><block s="doSetVar"><l>tag</l><block var="cont"/></block><block s="doReport"><block s="evaluate"><block var="value"/><list></list></block></block></script><list><l>cont</l></list></block></block></script></block-definition><block-definition s="throw %&apos;tag&apos; %&apos;value&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">catchtag</input><input type="%s"></input></inputs><script><block s="doRun"><block var="tag"/><list><block var="value"/></list></block></script></block-definition><block-definition s="for each %&apos;item&apos; of %&apos;data&apos; %&apos;action&apos;" type="command" category="lists"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%l"></input><input type="%cs"></input></inputs><script><block s="doUntil"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doSetVar"><l>item</l><block s="reportListItem"><l>1</l><block var="data"/></block></block><block s="doRun"><block var="action"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><block s="doSetVar"><l>data</l><block s="reportCDR"><block var="data"/></block></block></script></block></script></block-definition><block-definition s="if %&apos;test&apos; do %&apos;action&apos; and pause all $pause-1-255-220-0" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%boolUE"></input><input type="%cs"></input></inputs><script><block s="doDeclareVariables"><list><l>breakpoint</l></list></block><block s="doIf"><block s="evaluate"><block var="test"/><list></list></block><script><block s="doSetVar"><l>breakpoint</l><block var="test"/></block><block s="doShowVar"><l>breakpoint</l></block><block s="doRun"><block var="action"/><list></list></block><block s="doPauseAll"></block><block s="doHideVar"><l></l></block></script></block></script></block-definition><block-definition s="word $arrowRight list %&apos;word&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%txt"></input></inputs><script><block s="doWarp"><script><block s="doReport"><block s="reportTextSplit"><block var="word"/><l><option>letter</option></l></block></block></script></block></script></block-definition><block-definition s="ignore %&apos;x&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs></block-definition><block-definition s="tell %&apos;sprite&apos; to %&apos;commands&apos;" type="command" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%txt">Sprite</input><input type="%cs"></input></inputs><script><block s="doRun"><block s="reportAttributeOf"><block var="commands"/><block var="sprite"/></block><list></list></block></script></block-definition><block-definition s="ask for %&apos;reporter&apos; from %&apos;sprite&apos;" type="reporter" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%repRing"></input><input type="%txt">Sprite</input></inputs><script><block s="doReport"><block s="evaluate"><block s="reportAttributeOf"><block var="reporter"/><block var="sprite"/></block><list></list></block></block></script></block-definition><block-definition s="tell %&apos;sprite&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">Sprite</input><input type="%cs"></input></inputs><script><block s="doRun"><block s="reportAttributeOf"><block var="action"/><block var="sprite"/></block><list></list></block></script></block-definition><block-definition s="ask %&apos;sprite&apos; %&apos;expression&apos;" type="reporter" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">Sprite</input><input type="%repRing"></input></inputs><script><block s="doReport"><block s="evaluate"><block s="reportAttributeOf"><block var="expression"/><block var="sprite"/></block><list></list></block></block></script></block-definition><block-definition s="isItemOnList? %&apos;item&apos; %&apos;list&apos;" type="command" category="variables"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%l"></input></inputs><script><block s="doSetVar"><l>list</l><block var="shoppingList"/></block><block s="doSetVar"><l>item</l><block s="getLastAnswer"></block></block><block s="doDeclareVariables"><list><l>i</l></list></block><block s="doSetVar"><l>i</l><l>0</l></block><block s="doFor"><l>i</l><l>1</l><block s="reportListAttribute"><l><option>length</option></l><block var="shoppingList"/></block><script><block s="doIfElse"><block s="reportEquals"><block var="item"/><block var="i"/></block><script><block s="doSetVar"><l>sayVar</l><block var="item"/></block></script><script><block s="doSetVar"><l>noVar</l><l>0</l></block></script></block></script></block><block s="doIfElse"><block s="reportNotEquals"><block s="reportListAttribute"><l><option>length</option></l><block var="sayVar"/></block><l>0</l></block><script><block s="doSayFor"><block s="reportJoinWords"><list><block var="item"/><l> is already on the list.</l></list></block><l>2</l></block></script><script><block s="doSayFor"><l>This item is not on the list.</l><l>2</l></block></script></block></script></block-definition><block-definition s="delete %&apos;item&apos; from %&apos;list&apos;" type="command" category="variables"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%l"></input></inputs><script><block s="doFor"><l>i</l><l>1</l><block s="reportListAttribute"><l><option>length</option></l><block var="list"/></block><script><block s="doIf"><block s="reportEquals"><block var="item"/><block s="reportListItem"><block var="i"/><block var="list"/></block></block><script><block s="doDeleteFromList"><block var="i"/><block var="list"/></block><block s="doSayFor"><l>Item deleted.</l><l>2</l></block><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block><block s="doChangeVar"><l>i</l><l>1</l></block></script></block><block s="doSayFor"><l>You can&apos;t delete an item if it&apos;s not on the list.</l><l>2</l></block><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block-definition></blocks><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" penlog="false" volume="100" pan="0" lines="round" ternary="true" hyperops="true" codify="false" inheritance="false" sublistIDs="false" 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struct="atomic" id="632"></list></costumes><sounds><list struct="atomic" id="633"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites select="4"><sprite name="Add Item" idx="1" x="0" y="49.99999999999997" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="80,80,80,1" pen="tip" id="638"><costumes><list id="639"><item><ref mediaID="Add Item_cst_shopping-list-button-add-item"></ref></item></list></costumes><sounds><list struct="atomic" id="640"></list></sounds><blocks></blocks><variables></variables><scripts><script x="30" y="39.33333333333334"><block s="receiveInteraction"><l><option>clicked</option></l></block><block s="doSayFor"><l>To access another function, click on another option.</l><l>2.5</l></block><block s="doAsk"><l>What would you like to add to the list?</l></block><block s="doInsertInList"><block s="getLastAnswer"></block><l><option>last</option></l><block var="shoppingList"/></block><block s="doSayFor"><l>Item added.</l><l>2</l></block><block s="doStopThis"><l><option>this script</option></l></block></script><script x="33" y="266.33333333333337"><block s="receiveGo"></block><block s="doSetVar"><l>shoppingList</l><block s="reportNewList"><list><l>Macaroni</l><l>Beef</l><l>Cheese</l><l>Cereal</l><l>Eggs</l><l>Butter</l><l>Cookies</l></list></block></block><block s="doSayFor"><l>Click the flag to reset the list.</l><l>2</l></block></script></scripts></sprite><sprite name="Delete Item" idx="4" x="0" y="-100" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="173.4,31.211999999999993,0,1" pen="tip" id="678"><costumes><list id="679"><item><ref mediaID="Delete Item_cst_shopping-list-button-delete-item"></ref></item></list></costumes><sounds><list struct="atomic" id="680"></list></sounds><blocks></blocks><variables></variables><scripts><script x="25" y="144"><block s="receiveInteraction"><l><option>clicked</option></l></block><block s="doSayFor"><l>To access another function, click on another option.</l><l>2.5</l></block><block s="doAsk"><l>What would you like to delete from the list?</l></block><custom-block s="delete %s from %l"><block s="getLastAnswer"></block><block var="shoppingList"/></custom-block></script><script x="20" y="10"><block s="receiveGo"></block><block s="doSetVar"><l>shoppingList</l><block s="reportNewList"><list><l>Macaroni</l><l>Beef</l><l>Cheese</l><l>Cereal</l><l>Eggs</l><l>Butter</l><l>Cookies</l></list></block></block><block s="doSayFor"><l>Click the flag to reset the list.</l><l>2</l></block></script></scripts></sprite><sprite name="Search" idx="3" x="0" y="-50.00000000000006" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="140.25,33.660000000000004,0,1" pen="tip" id="712"><costumes><list id="713"><item><ref mediaID="Search_cst_shopping-list-button-search"></ref></item></list></costumes><sounds><list struct="atomic" id="714"></list></sounds><blocks></blocks><variables></variables><scripts><script x="16" y="142"><block s="receiveInteraction"><l><option>clicked</option></l></block><block s="doSayFor"><l>To access another function, click on another option.</l><l>2.5</l></block><block s="doAsk"><l>What item would you like to search for?</l></block><block s="doForEach"><l>item</l><block var="shoppingList"/><script><block s="doIf"><block s="reportEquals"><block var="item"/><block s="getLastAnswer"></block></block><script><block s="doSayFor"><l>This item is already on the list.</l><l>2</l></block><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block></script></block><block s="doSayFor"><l>This item is not on the list. If you&apos;d like to add it, click the "Add Item" button.</l><l>3.5</l></block><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script><script x="20" y="10"><block s="receiveGo"></block><block s="doSetVar"><l>shoppingList</l><block s="reportNewList"><list><l>Macaroni</l><l>Beef</l><l>Cheese</l><l>Cereal</l><l>Eggs</l><l>Butter</l><l>Cookies</l></list></block></block><block s="doSayFor"><l>Click the flag to reset the list.</l><l>2</l></block></script></scripts></sprite><sprite name="Clear List" idx="2" x="0" y="0" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="0,137.70000000000002,38.55600000000003,1" pen="tip" id="769"><costumes><list id="770"><item><ref mediaID="Clear List_cst_shopping-list-button-clear-list"></ref></item></list></costumes><sounds><list struct="atomic" id="771"></list></sounds><blocks></blocks><variables></variables><scripts><script x="15" y="148"><block s="receiveInteraction"><l><option>clicked</option></l></block><block s="doSayFor"><l>To access another function, click on another option.</l><l>2.5</l></block><block s="doAsk"><l>This option clears the entire list. Are you sure you want to do this?</l></block><block s="doIf"><block s="reportOr"><block s="reportEquals"><block s="getLastAnswer"></block><l>yes</l></block><block s="reportEquals"><block s="getLastAnswer"></block><l>Yes</l></block></block><script><block s="doFor"><l>i</l><l>1</l><block s="reportListAttribute"><l><option>length</option></l><block var="shoppingList"/></block><script><block s="doDeleteFromList"><block s="reportListAttribute"><l><option>length</option></l><block var="shoppingList"/></block><block var="shoppingList"/></block></script></block><block s="doSayFor"><l>List deleted.</l><l>2</l></block></script></block><block s="doIf"><block s="reportOr"><block s="reportEquals"><block s="getLastAnswer"></block><l>no</l></block><block s="reportEquals"><block s="getLastAnswer"></block><l>No</l></block></block><script><block s="doSayFor"><l>List not deleted.</l><l>2</l></block></script></block></script><script x="20" y="10"><block s="receiveGo"></block><block s="doSetVar"><l>shoppingList</l><block s="reportNewList"><list><l>Macaroni</l><l>Beef</l><l>Cheese</l><l>Cereal</l><l>Eggs</l><l>Butter</l><l>Cookies</l></list></block></block><block s="doSayFor"><l>Click the flag to reset the list.</l><l>2</l></block></script></scripts></sprite><watcher var="sayVar" style="normal" x="10" y="192.00000200000002" color="243,118,29" hidden="true"/><watcher var="noVar" style="normal" x="10" y="213.00000400000002" color="243,118,29" hidden="true"/><watcher var="shoppingList" style="normal" x="9" y="6" color="243,118,29" extX="80" extY="165"/></sprites></stage><variables><variable name="shoppingList"><list struct="atomic" id="854">Macaroni,Beef,Cheese,Cereal,Eggs,Butter,Cookies,Markers</list></variable><variable name="sayVar"><l>0</l></variable><variable name="noVar"><l>0</l></variable></variables></scene></scenes></project><media name="U3L1-ShoppingList_Empty to Students" app="Snap! 7, https://snap.berkeley.edu" version="2"><costume name="shopping-list-button-add-item" center-x="53" center-y="15" 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