<snapdata remixID="12346850"><project name="U3L1-ShoppingList_Empty to Students" app="Snap! 8.2, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKAAAAB4CAYAAAB1ovlvAAAAAXNSR0IArs4c6QAADclJREFUeF7tnQtYVkUax/8gVqJA4A27KJQWaV4wNHWNdgNdMdkt0QoS08V7mpbmHc0bKt7wMRNFBQQBLyAiKghYuZEXvJFd3PWCmM+qubuIKGiU7DOnnSMTtw/hnDnfNzPP08PTd86Zeef//nzPzDnvmbEqKysrgyxSAU4KWEkAOSkvm1UUkABKELgqUAHA1NRUdOrUiatRubm58PX15WqDbFwfBRgACwoKUFRU9NAtt2nTBvn5+aB/H7oiAHZ2dnB0dKxLFfJaM1CAATAmJgaenp6K2ZGRkejXrx/y8vKUiFhaWoqEhAQEBQWBzFscHBxw7949xMbGYu7cuQosN27cwKVLl+Di4gJbW1uEhoZi/Pjxym+kkOusrKxUWar7/0OHDiEwMNAMJJQm1kUBBsAVK1Zg0KBBCii3bt3C6tWr4e3tjd69e8PDwwPnz5+Hq6urAlqLFi1w5MgRBcQrV66gc+fOsLa2Vm3p2LGjcl1aWhoOHjyogEeBM+VvUlISPvroo7r0TV5rBgowAC5fvlwFkADTunVrXL58uUZw7O3tFWBNActUEAmAkydPNgMJpYl1UaACgH5+fkp9rZydscznCTxh16DW9T+4yZp+aZM2HdFt8mb1gsTEREyZMsX0CuSZZqkAA+CyZctAAbxz8wZctw1GksNg/HHIRM06R6KmzfoBcPi1ED+N/oIB8OOPP9asXVmxMRSoEsDbBT/BPmkcrEcna24pgbDpZ69IADVX2ngNMACSWWv5CJiVkYGB/kPrdWxX1Riw2TpPXB/1ORMBp06dajzFpEX1qgAD4NKlS9VJSHHhv5HxRbYKZL22WkllBMBrIx/MlskkRAKoter862cAXLJkiQpcya3/4MDnX+kGYPPwV3F1RBYTAadPn85fIWmBpgpIADWVV1ZekwIMgIsXL1Yj3t2i/yIt6xDzXLA+n/P9fizYcsOf8K+gTCYCzpgxoyb75XEzV6BGAOmkROt+SgC1VtiY9TMALlq0SIl4pNy7XYD9mV/qNgZ0jngNV4YfUN8VkwfRM2fONKZq0qp6U0ACWG9SyooeRgEGwIULF6pjvtLiQuw98LluY8AnNnnjx2HpatICiYCzZ89+mD7Ja8xIgQoA0jEfBVCvMSAFkGonATQjiupgKgPgggUL1DHfLyW3kJp+ULcx4JOb++Dye2nMLDg4OLgOXZOXmoMC1QK4Jy1LnZSQztQmobS250sAzQGX+reRAXDevHkqcL/eLULK/swqx4DUlKre7db2+NNRf0b+0P1MBJwzZ07991jWaCgFKgWQRLr7924rAOo1BiQAXgrcx0xCSKq/LJatAAPgJ598ogJX9vMd7N6XoRuAraP7IW/IXiYCEntksWwFqgUwee+BSm/BVJKqXs09zPE2W3wkgJbNWqW9YwAktzz1lltajF2p6bpFQJeY/rj4bioTAcmYVBbLVkACaNn+NXzvGADJczf6Wab1r3eRtCeNiYBaPoZxjX0d5/1T1EkISUidP3++4QWUBtZNgWoBTEzZr9uruGe2DpAA1s2XZnk1AyB590rHgA3u38PO3ft0GwM+G+eLc+/sZsaA5N20LJatgATQsv1r+N4xAM6aNUuNeDZlP2P7rlTdbsHtEv6Kf7794BNQkoxA8hNlsWwFJICW7V/D944BkHyDQWfBj1j9gm1Je3QbAz637Q2cHZzEzIJDQkIML6A0sG4KVACQTkJ4AUi7Q27B5CMpWSxbAQZA8h0uBfBR6/uI35ms2xjQbcdA/DAokZkFk++UZbFsBWoEUK9sGJ4AZmZkYE7wHPx07Zou3nZ0csKIUSMxeswYXdozciMMgNOmTVMj4GMNyhC3Y5duY8AXdvrhe7+dTAQkS4VoXQ79PRuer/xB62Yqrf/Mt9+j44vtubRtlEYZAMlaLHQS0sgGFQDU8lUcAfC7gTuYSYjWAK5ZG44J7/ONQtNnzsaSEHEfuDMAkvX4KIC2Da0Quy1Rt4zoDkmD8e2b25mEVLJeoSyWrUAFAOmYjwKo1xiQAlh+FqwlgCUlJWjUqJHJ3m3r4orzl/JA/5p8oQknlhQXo5GtrQlnWt4pDIBkSVwKXONHrBGTsFO3MeCLu97CmTe2MWNAsma1VoWsaU3Wtq6ufPPtd+j0YgcFOlKmBc/BwawsxMfFVriMnkMhXRi6HLOnTsFz7Ttg374HeY6VtWeKLVrpwLveagHcEr9Dt4zojslv6wpgTcJHbIrEyKDh+OrrI+jwghu6ubsrML3p56f8XlW5lH8ZLm1aK4dHj31f2Wqid68eNTUn7HEGQLIqPY2ATR5tgOi47bpFwE6730HuX+KZtWHIthGyWLYCDIBkXw66OJEIAHq4d8XxUye5erhrF3ecPH2Kqw08G2cA/PDDD9Vbrn2jhojauk23CNg5xR+nfeOYxzArV67UXBueALzUxR0nBIaPOLcCgPQWTACMjE3Q7VVclz0BCoC0kHfBq1at0hxA2QBfBRgAJ02apEY8B9tHsDkmXrcI6J76Lk4N2MoAGBYWxlcd2brmCkgANZdYNlCdAgyAEydOVCPe440fxaYtcbpFwK57h+Dk6w+er5FbMNksURbLVoAB8IMPPlDHfI5NHsPG6K26jQFf2heIE/1jmEmIBNCy4aswCZkwYYIa8ZzsGiEiKla3COixfyiO+2xhxoBr1qyxfA8I3kMmAkoABaeBQ/cZAMnu5vQxTFN7W2yIjNEtAnZLew85/aKZCPjpp59qLsnNmzcxYsQohCwOQfPmzTVvjzRA2gwP34DhwwLh5uamS5tGbaRaANdv3qLbGLB7+jDdAYyKjMKw4cO4+iZ1zx4M8PXlagPPxhkAx40bp76Ka+bQGOGbonWLgC8fGI6jfSOZd8Fr167VVJuiotuws2uiaRs1VX72H+fg9ny7mk6z2ONcAfT29sbQoUOV/3gAaLFeNaOOMQCOHTtWveW2cLTDuo1RSgRMSUlB27Zt0b69dt8v9Mj4G4702cxkRK9bt04zKavKwVsZtgY74uNw+OjhWiWfknxAmvtXUHATjo6PM7bT3MLKOiTzAf+vCgGQTkIIgJ9FROL69eugiaEXL15UAaFC0kXKy/9/dnY2evXqpfxEjt+/fx8k2ZWkV/3+/KtXr6JVq1bomRmkAEgLeRDNA8DygNDsZ5Lj5//W2wqUNE/QP2BIpYmp5HqSQ0hyAMtnT9PfJICsAkwEHDNmjApgSyd7nNsyA7GXHZCcnAyyboynp6d69YkTJ+Dv74+oqCgEBAQoiQN9+vRBfn4+bGxs4OPjAwIsKeR5HnnE07BhQ5SWlqp1UPjID72yRuCw9yYGwPDwcM0iYFUVkwiYc+wo3h8/HsMC/JH55ZfwfvVVePn0x63CQri90B5eXq8px0j2My00IzoqLl45Vr7QLGlyTCan1gLAH6JnIuFHe5Cle+3s7HDhwgX1ahcXFwQFBcHLy0uJdgUFBUhPT0ffvn1x9uxZ9TdHR0dlfxHyyWdoaGgF+CiEPAA8d+Ei2j37jO6Ql2/w9p07aNK4MVcbeDbORECyHl/37t0Ve5ybOuCZ7YMR5xiI/Ue/R5cuXdCjR/Wp5V27dsXJkzUneF67dg3Ozs6gf3OSN2KS/VF87bVR1eLYsWOa7xW3KzEJb/oN5Kk/IjZEYOSokVxt4Nk4AyAZ7+Xm5ioRizyGeX5XgGLb3pJ2sEEZ0kqerVdbH7P6BePtj+HJBkVKvdmvRahjRAJ8y5Yt67W9yio7880ZbN+ZhLFjR9fqK7m6GFZYWIjZs4MRtmoFmjVrVpeqzP5aBkDSGzLwd3X97SswEg2dnJx06SSJhqdPn1baysvLA5kQyWL5ClQA0PK7LHtoJAUkgEbyhoC2SAAFdLqRuiwBNJI3BLRFAiig043UZQmgkbwhoC3CA9jdoxuOHc/h4nr3Tp1x6ptcLm0bpVGhAeS5KgIFoNtLHsg5cdwoPOhuh9AA6q62bLCCAhJACQVXBYQFsDZJoCSZdPrUaTUuNEk9WX6NQFO8WxtbTKnPnM4RFsDiO8WwbWz6srg03484l+b3kVzBjMwsZcHK8smnBMDFS5Zi/TrTvmmRS/Sa0z8ZaatFKSBsBCRenDlrDkIW8d2Vfd36jRg7eoRFQVWbzggNIBGK52eRh4/moOfL3WrjL4s7V3gAiUdXh4UhYv0G3C0p0cXB9g4OWBQSAp/X++vSnpEbkQAa2TsC2CYBFMDJRu6iBNDI3hHANgmgAE42chclgEb2jgC2SQAFcLKRuygBBCB3TOeHqPAAyh3T+cFHWhYaQLljOl/4hAeQv/zSAmEjoKk7pmuxQ/rvsZPpWAL+Q6wqCZRsMu3h4YGlC+YreX/zFoRgbvBMZfNpsj5gztfZilrld0Z/5y0/VUFyHskDpPmDdH1BuoM6vba85DIhVUAAq+pyz5d7wrFpUzX7mQJIV0al11WV9UwBJCuoPvXU07hy5Ud1JVVyTfSWWAVoWX5TQNhbsATAGAoIDaDcMZ0/hEIDSOTn+W2w3DFd3oL5hwDBLRA+Agruf+7dlwByd4HYBkgAxfY/995LALm7QGwDJIBi+5977yWA3F0gtgESQLH9z733EkDuLhDbAAmg2P7n3nsJIHcXiG2ABFBs/3PvvQSQuwvENkACKLb/ufdeAsjdBWIbIAEU2//cey8B5O4CsQ2QAIrtf+69lwByd4HYBkgAxfY/995LALm7QGwDJIBi+5977/8HDbgKL5Ec0hwAAAAASUVORK5CYII=</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 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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 %&apos;pred&apos; from %&apos;data&apos;" type="reporter" 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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 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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 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