<snapdata remixID="14267222"><project name="U2L2p1-ShoppingList" app="Snap! 10.5.1, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKAAAAB4CAYAAAB1ovlvAAAAAXNSR0IArs4c6QAAD11JREFUeF7tnWlQVUcWxw+gCIiRaOJe4r4ii3FDWY1RB41r4kRjNKlKTZJymaQq5TgzSWZSyejUfBlrkg8JjgnRZFBBRUCMoogsCkICouICgltYZBNwB3Tq33Cv7/ow743w6H7T3VUUpdzXffr0753ue/v0/zo8fPjwIamiPMDJAw4KQE6eV80yDygAFQhcPdAqgNnZ2fTss8+Sg4MDV+OsafzBgwdUU1NDEydOtOZydY1gHjADMCUlhTw9PQUz07I5ly9fpqCgIMsXqiuE8oABwBMnTlCvXr2YgZmZmZSTk0P37t2jzp07swhz7NgxmjJlCmVkZOi/J0+eTC4uLnT06FEGQFpaGq1atYq++OILmjNnDotODQ0NFBERQeHh4TbtfEVFhYqENvVw+1duALCgoIA6deqkA3jmzBnCTTKmYvy/k5MT3b17l5577jkqLS2lCRMmUEJCgiFiOjs709tvv00bNmyg7t27k5+fH+Xl5VHPnj0pLCys/XtgUmNjYyMNHz7cpm2oytvXAwYACwsLydHRkQFXV1dHP/30E1sLNjU1UWBgICUlJVFubi6Lkog2+D148GBmEUAFACtWrKBr165RYmIii4z4LMC9f/8+TZo0SQdaA7s9f6OuoUOHtq+HVG029YBZBASAKIDHzc3NrHEtEmJaRbRDRDQtABbTbkeUm/X1dL+hQW8KNyQqAnaE59uvDQOAFy5cYBEQpTA7mbof+Ig8XByp0HU01Tl5tF+rbazJ814R9WwoJ/ee/cjxvb10584dPQorANvo3A7+uBmA2qOXnJhw+k3lDsoc8R4Nn7Gsg8369eZqqirJ9eCn1L8ml+7/IZeqqqp0AEeMGCGUrcqYX/eAAcDz58/rz/5yYjbTgDuF1H/lP4X0IdagI6KXUOO6bAOAI0eOFNJeZVTrHjAAeO7cOR3A3L2baVp/J2qY+q6wviv97vc0cs23VFlZqduoABR2uFo1zAxA7arcvf+mkMFudHvCm8L26Mq2deS16isDgKNGjRLWXmWYuQcMAJ49e1a/4mRsM4A3x68U1m9Xv19P41Z/xR4JaWX06NHC2qsMswBgfn6+CYBbWgBcIazfrv2wnkVADUDcQCkAhR0uy1MwANTSA/PimgGs9xMbwHGrv6br16+zzgHAMWPG2NcISG6tYQrWtt7gk7y4b1oAfENYF1374Y9sCjYFcOzYscLaqwyzMAWfPn1aj4Cn4r+h4EFuVOe7nEWW9twya6/6SiL/RIiA5eXlrGd4iK4AtC/MDREQAGI7C+VU/LcUMtiVan2WC9ujksg/swhoCqCXl5ew9irDLETAU6dO6QCe3vcti4C1Pq8L67fS7QDwayorK9Mj4Lhx44S1VxlmAUCkTWkR8PS+CBYBb3iLDOBHLAJqACLrRgFoX5gbpmAAiPQplDMJERQ8SHwAvdd8zXITUQCgt7e3fY2A5NYaADx58qQJgN8xAGvGLRX2JqR858dsCjYF0MfHR/Ihta/uGwBEsqkWAfP3NwNY7bVU2B6V7/yEEAFLSkr0COjr6yusvcowC2tAAIisZpT8/VtbAHxNWL9dj/qERUANQCTLKgCFHa5WDTNEQBxC0gA8++NWCvJEBBQbQO814fTLL7+wzgFAnEFRxX48YAYgUu1Rzv64jYIHuVDVWJEB/Aubgk0BHD9+vP14X1lqVEb4+eef2RFKlHMHtrEIWDlmibBuqtj1V/JZE84OQaHg+KgCUNjhsjwF4xTcIwC/ZxGwYrS4AFbu+pRFQFMAX3jhBfsaAcmtNUzBABDHJ1HOH/yegjwFB3D3pywCXr16VY+AOKusiv14wAAgNGEeAfhDC4CvCtubyscAxDFRBaCww2V5Cs7KytIBvJDYDGD5yFeE7VH1ns/IZ204XblyhdkIAJVIkbDDZR2A0IJBuZD4nxYAFwvbo+qYz9gUbAog1BdUsR8PmIkTaQAWHGoGsGyEuADWxHzOIiCUsVC6dOnC5D9UsR8PGACEItYjACNbAFwkbG9q9n7OIqApgFDrUsV+PGAGoKb1Ung4kgIHulDp8IXC9qY29m/ks3YzXbp0SY+AkI9TxX48YAAQun+PANxOQZ5dqGSYOAAeOHBAz/1buXIl1cZuYFOwBiAElRSA9gMfLDUAePz4cR3Ai0nbWQQsGbZAmB4h8fSDDz6g9evXE9Ku6uIA4GYqLi5mNgJAf39/q+3FOZfiouKW54jN8nIdUZC3eOfuXaariGOk9iCFbCu/mAGoKU1dTNrBImBOt6lMfer27dvCnLmFBFx1dTXVx/+dRUBTAKdOnWq1r44mH6WH9JACAgJ0YU6rP9zGCwF7akoKOTl1oqBgeaWFDQBCglcDsOjIDgoc2IXyPAJZpvGQIUMIZ0b69+/PXK+dktPGwfTfR44cYZF0wIABTDYD33JI+KLurl27sqxlqFjhm3/w4EHq0aMHYQvNNBI8qX7ABxk5fObW/n+Q79rNVFRUxMxwdXUlawHEUc7MjEya+/JcbhEIfYSQJ6J2t27d2oi0fX7cAGB6eroJgDvJvw9RtffrtHHjRlq7di272xw2bJjFnr7zzjtMXRUyvTgmCXXVL7/8kt5//32mIY2HxVBghazaM888QzExMTRjxgyL9QI6yAhDBfXGjRvUmPA5EycyBXDatGkW68EFycnJDHprBx7Q40uDfWdID1v7OUvG3Lx5k3JzciggMNDSpf+XfzcDEFMtSnHyTup7q4DKxr5Os2fPZlEH0x6cb6kgQRRyGb179yYPDw+CkwHesmXLWJTC8zocgkc0w/bfrFmzdIm1J9UN+CAhjEgM4JA08fKpj6n63SS6ePGiHgExnVpT9ickUEhoKLOntYIvyKZNm+jDDz9kfcdxhdDQUGYD8g41RX7Ygii+aNEi2rdvHy1cuJCtKXENIj6+KLB50KBBrbaDa2L27KGly8TSYLTGh+1xjQFAOFIrxclRtKzpAEW7zKES5wHUp08fNqU+TcG0C5FybcfiaerA9KzpTVdVlFNoXSK5X0qm8t8d0QFEvTNnzrSq+qioKJo7d+4TAQRYAA/bezgpiB+Is/fr14+goxgcHKy3g+UFIi+eIuD3li1bWJR+/vnn2TX19fVPvDnC3ntcXBwtXizuA3+rHPqUFxkAxGIe60A4+m55Eb14ZiOrNvt+P6pqMteLfso22/yxsc7XaYBTHTl49KMzL/6LaVJjrYn1nyaabqmRqJ1RFDYnjK1JWys4pI8vHBTDoJWNiI4ohrUjorqmQQNQ8YMlBEBEtANw+MEMgEiIL86T3r1y+9Zt2r1nNy1fLq4AgCVftuXvZi+qwbcb0yIcDadpr21oSyO2+iyWBIAPkQbryv9FnDLv5EkG0kDOL+XBM8yy0jKa4i/nA3QzAG0Fi2j1Yg25NyaGXp43j61JeRRse+6KjqbFr7zCzQYe/TZtU1oA4YQrl69QamoqTQuYxt550lFvrsV6trKigvBmqkmTJtNAz4G8OeDWvtQAwuu4C8UOUF1tLT1oahZmsnVx6tSJ3dT5+vlKG/k0H0sPoK1hU/X/ugcUgIoQrh5QAHJ1v2pcAagY4OoBBSBX96vGpQYQ22Dpaen04EETy95paOi4fEBs7Tl3cabp06dLfScsLYAAYMf2HWzvltdzOOyNZ2dl0YKFC/W3lMoWE6UF8Py58+wZIJ7F8SxQpWVbggPlfBgtLYCHDx0m/6n+Zi/lhuI+cg6RiFBbW8tS/60pSEHDkQGIIyHPEUm8AEsr2LdGStnjBelv2I1BSpqMRVoA4+PjWQYLzpGYFqhDQOgcsr8AEIKXCQkJTHkL2oPIa0QqFpJ38XJs0wQIZMMgHxGZNMiEQUIH1pbIoUSWEdK/tBQtrU38PTo6WmXDyPbti4iIoCVLlphFQICC8xrI58MpPEQm5A4ieiGnEfu3YWFhLCcQACM/EAURECBpb+tEHciaTklJoQULFrC0LkTTx9/oDgBR/xtviPtGKluyIW0E3J+wn4JDgs0AhLO1xFfN8fg3EhXwJibcvFiboobP4QdJrbjjRhR9/AQcpuBDiYdo3vx5thxnYeuWFkBkwtyovcH9tQ65Obnk4uqiR05hSbGRYdICiEi2Z/cemjhpIrc7UDyGSU9Lo9++9pp6DGMjwIWuFgmhSYcOEzk6kHPnzvpbomxtNM4COzk5UmNjEzsxiAfSshZpI6CsAy5avxWAoo2IZPYoACUbcNG6qwAUbUQks0cBKNmAi9ZdBaBoIyKZPQpAyQZctO5KDyD2bAsLCqiiorJDBSrdu7mTl5cX26aTuUgNIHYisk5ksd0Q6OF05MF0ZMocSz9GAYEB3HZiRABfWgBFkMWADXGxcTR/wXyWqCBjkRbAjIxM6tunN3k+Qbevo2BAFIaGIFRjZSzSAogk05CQEEM6FpJNkXIFyVxkMCP/LzIykpYuXcrSqiBaCTk3SBVj/YaEBi3vT4MHyqtIUoVqF5JSUYcm7In/g9QbfrSCdKx98fH06hJx30pqyy+GtADGxsYyMUvTjGiotqJAng7nRSD5BnVXZEAj2RRJp0hGRTY0lFC3bdvG1o2rV6/WxwhZ0bgeGdeQ9L116xa7HgmukPdFxFu3bp0u8asEKjtq5W3Lr9FT1L1161amSmoqUImzGYiAUMpCpjIE2fESb4hRQnASkm4QwISYEaZMvKkdyamIhlqiaVJSEhNlx7SK63EuBOKWqAs3HoAQb/REGygAfcf27fTmW289RS/s/yPSRsDUlFTyG+9H7u7uXEcRYGdnZVPo9FCudvBqXFoAsZ7LOJ5BL818ietrGuLj4gjvt+vVuzcvBri2Ky2A8DrWa9AEDAwKtPqcR3uNFm5e0lLTGPw4myJrkRpALH/P5udTSWkpdXVz69CMaADY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select="1"><scene name="U2L2p1-ShoppingList"><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 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><list></list></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="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" 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><list></list></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><list></list></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="reportVariadicGreaterThan"><list><block var="start"/><block var="end"/></list></block><script><block s="doSetVar"><l>step</l><l>-1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportVariadicLessThan"><list><block var="i"/><block var="end"/></list></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="reportVariadicGreaterThan"><list><block var="i"/><block var="end"/></list></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><list></list></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><list></list></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 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struct="atomic" id="549"></list></costumes><sounds><list struct="atomic" id="550"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites select="1"><sprite name="Clear List" idx="2" x="0" y="3" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="2" color="0,0,0,1" pen="tip" id="555"><costumes><list id="556"><item><ref mediaID="Clear List_cst_shopping-list-button-clear-list(2)"></ref></item><item><ref mediaID="Clear List_cst_Clear List"></ref></item></list></costumes><sounds><list struct="atomic" id="557"></list></sounds><blocks></blocks><variables></variables><scripts><script x="13.333333333333343" y="13.333333333333329"><block s="receiveInteraction"><l><option>clicked</option></l><comment w="53.333333333333336" collapsed="true">1.5</comment></block><block s="doAsk"><l>Are you sure you want to delete everything from the list?</l></block><block s="doIfElse"><block s="reportVariadicEquals"><list><block s="getLastAnswer"></block><l>yes</l></list></block><script><block s="doSetVar"><l>shopping list</l><block s="reportNewList"><list></list></block></block></script><script><block s="doSayFor"><l>Okay, I won&apos;t.</l><l>2</l><comment w="177.33333333333334" collapsed="false">The ELSE part isn&apos;t required by the problem, but it&apos;s bad user interface design to just silently do nothing -- it makes the user nervous.</comment></block></script></block></script></scripts></sprite><sprite name="Add Item" idx="1" x="0" y="50" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="2" color="80,80,80,1" pen="tip" id="586"><costumes><list id="587"><item><ref mediaID="Add Item_cst_null"></ref></item><item><ref mediaID="Add Item_cst_Add Item"></ref></item></list></costumes><sounds><list struct="atomic" id="588"></list></sounds><blocks></blocks><variables></variables><scripts><script x="13.333333333333343" y="17.999999999999986"><block s="doSetVar"><l>shopping list</l><block s="reportNewList"><list></list></block><comment w="90" collapsed="true">page 1, ex. 2</comment></block></script><script x="12.666666666666657" y="60.66666666666666"><block s="receiveInteraction"><l><option>clicked</option></l><comment w="53.333333333333336" collapsed="true">1.3</comment></block><block s="doAsk"><l>What item should I add to the shopping list?</l></block><block s="doAddToList"><block s="getLastAnswer"></block><block var="shopping list"/></block></script><comment x="12.666666666666657" y="161.33333333333337" w="170" collapsed="true">1.5 is in the Clear List sprite.</comment><comment x="12.666666666666657" y="192.66666666666663" w="170" collapsed="true">1.7 is in the Delete Item sprite.</comment></scripts></sprite><sprite name="Delete Item" idx="3" x="0" y="-50" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="0" color="89.7599999999999,0,204,1" pen="tip" id="606"><wear><ref mediaID="5"></ref></wear><costumes><list id="607"><item><ref mediaID="Delete Item_cst_Delete Item"></ref></item></list></costumes><sounds><list struct="atomic" id="608"></list></sounds><blocks></blocks><variables></variables><scripts><script x="13.333333333333343" y="13.333333333333329"><block s="receiveInteraction"><l><option>clicked</option></l><comment w="53.333333333333336" collapsed="true">1.7</comment></block><block s="doAsk"><l>Enter the item number of the item you want to delete.</l></block><block s="doDeleteFromList"><block s="getLastAnswer"></block><block var="shopping list"/></block></script><comment x="13.333333333333343" y="102.66666666666669" w="320" collapsed="false">The above is all that&apos;s required.  But when deleting something, especially selected by number, it&apos;s a good idea to get confirmation:</comment><script x="13.333333333333343" y="164"><block s="doDeclareVariables"><list><l>item number</l></list></block><block s="doAsk"><l>Enter the item number of the item you want to delete.</l></block><block s="doSetVar"><l>item number</l><block s="getLastAnswer"></block></block><block s="doAsk"><block s="reportJoinWords"><list><l>Delete </l><block s="reportListItem"><block var="item number"/><block var="shopping list"/></block><l>?</l></list></block></block><block s="doIfElse"><block s="reportVariadicEquals"><list><block s="getLastAnswer"></block><l>yes</l></list></block><script><block s="doDeleteFromList"><block var="item number"/><block var="shopping list"/></block></script><script><block s="doSayFor"><l>Operation cancelled.</l><l>2</l></block></script></block></script></scripts></sprite><watcher var="shopping list" style="normal" x="10" y="10" color="243,118,29" extX="120" 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