<snapdata remixID="12265354"><project name="U2L2p1-ShoppingList" app="Snap! 8.1, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><scenes select="1"><scene name="U2L2p1-ShoppingList"><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="clear list %&apos;yes or no&apos;" type="command" category="motion"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doIfElse"><block s="reportEquals"><block s="getLastAnswer"></block><l>yes</l></block><script><block s="doSetVar"><l>shopping list</l><block s="reportNewList"><list></list></block></block></script><script><block s="doSayFor"><l>Okay, I won&apos;t.</l><l>2</l><comment w="177.33333333333334" collapsed="false">The ELSE part isn&apos;t required by the problem, but it&apos;s bad user interface design to just silently do nothing -- it makes the user nervous.</comment></block></script></block></script></block-definition><block-definition s="delete item from List %&apos;itemToBeDeleted&apos;" type="command" category="motion"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doDeclareVariables"><list><l>isDeleted</l></list></block><block s="doSetVar"><l>isDeleted</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><block s="doFor"><l>i</l><l>1</l><block s="reportListAttribute"><l><option>length</option></l><block var="shopping list"/></block><script><block s="doIf"><block s="reportEquals"><block var="itemToBeDeleted"/><block s="reportListItem"><block var="i"/><block var="shopping list"/></block></block><script><block s="doDeleteFromList"><block var="i"/><block var="shopping list"/></block><block s="doSetVar"><l>isDeleted</l><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block></script></block><block s="doIfElse"><block s="reportEquals"><block var="isDeleted"/><block s="reportBoolean"><l><bool>true</bool></l></block></block><script><block s="doSayFor"><block s="reportJoinWords"><list><block var="itemToBeDeleted"/><l>has been deleted</l></list></block><l>2</l></block></script><script><block s="doSayFor"><block s="reportJoinWords"><list><block var="itemToBeDeleted"/><l>was not on the list</l></list></block><l>2</l></block></script></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="614"></list></costumes><sounds><list struct="atomic" id="615"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites select="3"><sprite name="Clear List" idx="2" x="0" y="3" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="2" color="0,0,0,1" pen="tip" id="620"><costumes><list id="621"><item><ref mediaID="Clear List_cst_shopping-list-button-clear-list(2)"></ref></item><item><ref mediaID="Clear List_cst_Clear List"></ref></item></list></costumes><sounds><list struct="atomic" id="622"></list></sounds><blocks></blocks><variables></variables><scripts><script x="13.333333333333343" y="13.333333333333329"><block s="receiveInteraction"><l><option>clicked</option></l><comment w="53.333333333333336" collapsed="true">1.5</comment></block><block s="doAsk"><l>Are you sure you want to delete everything from the list?</l></block><custom-block s="clear list %s"><l></l></custom-block></script><script x="200" y="267.6333333333333"><block s="doIfElse"><block s="reportEquals"><block s="getLastAnswer"></block><l>yes</l></block><script></script><script></script></block></script></scripts></sprite><sprite name="Add Item" idx="1" x="0" y="50" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="2" color="80,80,80,1" pen="tip" id="640"><costumes><list id="641"><item><ref mediaID="Add Item_cst_null"></ref></item><item><ref mediaID="Add Item_cst_Add Item"></ref></item></list></costumes><sounds><list struct="atomic" id="642"></list></sounds><blocks></blocks><variables></variables><scripts><comment x="12.666666666666657" y="161.33333333333337" w="170" collapsed="true">1.5 is in the Clear List sprite.</comment><comment x="12.666666666666657" y="192.66666666666663" w="170" collapsed="true">1.7 is in the Delete Item sprite.</comment><script x="51.33333333333337" y="283"><block s="doSetVar"><l>shopping list</l><block s="reportNewList"><list></list></block><comment w="90" collapsed="true">page 1, ex. 2</comment></block></script><script x="244.66666666666663" y="93.66666666666666"><block s="receiveInteraction"><l><option>clicked</option></l><comment w="53.333333333333336" collapsed="true">1.3</comment></block><block s="doAsk"><l>What item should I add to the shopping list?</l></block><block s="doAddToList"><block s="getLastAnswer"></block><block var="shopping list"/></block></script></scripts></sprite><sprite name="Delete Item" idx="3" x="0" y="-50" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="89.7599999999999,0,204,1" pen="tip" id="660"><wear><ref mediaID="5"></ref></wear><costumes><list id="661"><item><ref mediaID="Delete Item_cst_Delete Item"></ref></item></list></costumes><sounds><list struct="atomic" id="662"></list></sounds><blocks></blocks><variables></variables><scripts><script x="13.333333333333343" y="13.333333333333329"><block s="receiveInteraction"><l><option>clicked</option></l><comment w="53.333333333333336" collapsed="true">1.7</comment></block><block s="doAsk"><l>Enter the item number of the item you want to delete.</l></block><block s="doDeleteFromList"><block s="getLastAnswer"></block><block var="shopping list"/></block></script><comment x="13.333333333333343" y="102.66666666666669" w="320" collapsed="false">The above is all that&apos;s required.  But when deleting something, especially selected by number, it&apos;s a good idea to get confirmation:</comment><script x="13.333333333333343" y="164"><block s="doDeclareVariables"><list><l>item number</l></list></block><block s="doAsk"><l>Enter the item number of the item you want to delete.</l></block><block s="doSetVar"><l>item number</l><block s="getLastAnswer"></block></block><block s="doAsk"><block s="reportJoinWords"><list><l>Delete </l><block s="reportListItem"><block var="item number"/><block var="shopping list"/></block><l>?</l></list></block></block><block s="doIfElse"><block s="reportEquals"><block s="getLastAnswer"></block><l>yes</l></block><script><block s="doDeleteFromList"><block var="item number"/><block var="shopping list"/></block></script><script><block s="doSayFor"><l>Operation cancelled.</l><l>2</l></block></script></block></script></scripts></sprite><watcher var="shopping list" style="normal" x="10" y="10" color="243,118,29" extX="80" 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