<snapdata remixID="12213057"><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="Add Item" 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var="index"/><block var="Shopping List"/></block><block s="getLastAnswer"></block></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block><block s="doChangeVar"><l>index</l><l>1</l></block></script></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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