<snapdata remixID="13143348"><project name="U3L1-ShoppingList_Empty to Students" app="Snap! 9.0, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,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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><list></list></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 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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="reportVariadicEquals"><list><block var="data"/><block s="reportNewList"><list></list></block></list></block></block></script></block-definition><block-definition s="keep items such that 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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 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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 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