<snapdata remixID="12113064"><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 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