<html><head><meta http-equiv="Content-Type" content="text/html charset=gb2312"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures; color: rgb(186, 45, 162);" class=""><br class=""></span></font></p><p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures; color: rgb(186, 45, 162);" class=""><br class=""></span></font></p><p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures; color: rgb(186, 45, 162);" class="">import</span><span style="font-variant-ligatures: no-common-ligatures;" class=""> Cocoa</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal; min-height: 18px;" class=""><font face="Menlo" class=""><br class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">var</span><span style="font-variant-ligatures: no-common-ligatures" class=""> numbers = [</span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">12</span><span style="font-variant-ligatures: no-common-ligatures" class="">, </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">14</span><span style="font-variant-ligatures: no-common-ligatures" class="">, </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">15</span><span style="font-variant-ligatures: no-common-ligatures" class="">, </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">21</span><span style="font-variant-ligatures: no-common-ligatures" class="">]</span></font></p><div class=""><br class=""></div><div class=""><span style="font-family: Menlo;" class="">// This is OK</span></div>
<p style="margin: 0px; font-size: 14px; line-height: normal; color: rgb(79, 129, 135);" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">numbers</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">.</span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">map</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">({</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> (number:</span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Int</span><span style="font-variant-ligatures: no-common-ligatures" class="">) -> </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Int</span><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">in</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">let</span><span style="font-variant-ligatures: no-common-ligatures" class=""> result = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">3</span><span style="font-variant-ligatures: no-common-ligatures" class=""> * number</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">return</span><span style="font-variant-ligatures: no-common-ligatures" class=""> result</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><font face="Menlo" class="">})</font></span></p><div class=""><font face="Menlo" class=""><br class=""></font></div><div class=""><font face="Menlo" class=""><br class=""></font></div><div class=""><font face="Menlo" class="">// This is OK</font></div>
<div style="margin: 0px; font-size: 14px; line-height: normal; color: rgb(79, 129, 135);" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">numbers</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">.</span><span style="font-variant-ligatures: no-common-ligatures; color: #3e1e81" class="">map</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">({</span></font></div><div style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> (number: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Int</span><span style="font-variant-ligatures: no-common-ligatures" class="">) </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">in</span></font></div><div style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">return</span><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">3</span><span style="font-variant-ligatures: no-common-ligatures" class=""> * number</span></font></div><div style="margin: 0px; font-size: 14px; line-height: normal; min-height: 18px;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></font></div><div style="margin: 0px; font-size: 14px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><font face="Menlo" class="">})</font></span></div>
<p style="margin: 0px; font-size: 14px; line-height: normal; min-height: 18px;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class=""></font></p><p style="margin: 0px; font-size: 14px; line-height: normal; min-height: 18px;" class=""><font face="Menlo" class="">//Report Error: Ambiguous reference to member ¡®map¡¯ </font></p><div class=""><font face="Menlo" class="">// </font></div>
<p style="margin: 0px; font-size: 14px; line-height: normal; color: rgb(79, 129, 135);" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">numbers</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">.map({</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> (number: </span><span style="font-variant-ligatures: no-common-ligatures; color: #703daa" class="">Int</span><span style="font-variant-ligatures: no-common-ligatures" class="">) </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">in</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> v</span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">ar</span><span style="font-variant-ligatures: no-common-ligatures" class=""> ret = </span><span style="font-variant-ligatures: no-common-ligatures; color: #272ad8" class="">3</span><span style="font-variant-ligatures: no-common-ligatures" class=""> * number</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><font face="Menlo" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""> </span><span style="font-variant-ligatures: no-common-ligatures; color: #ba2da2" class="">return</span><span style="font-variant-ligatures: no-common-ligatures" class=""> ret</span></font></p>
<p style="margin: 0px; font-size: 14px; line-height: normal;" class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><font face="Menlo" class="">})</font></span></p><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div></body></html>