<snapdata remixID="12136032"><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 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