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<span style="font-weight:bold">import</span> <span style="color:#bf0303">'dart:io'</span> <span style="font-weight:bold">show</span> File;
<span style="color:#898887">/**</span>
<span style="color:#898887"> * print a number</span>
<span style="color:#898887"> * "helo"</span>
<span style="color:#898887"> * 'string'</span>
<span style="color:#898887"> */</span>
<span style="color:#0057ae">const</span> <span style="color:#0057ae">List</span><span style="color:#ca60ca"><</span><span style="color:#0057ae">int</span><span style="color:#ca60ca">></span> list <span style="color:#ca60ca">=</span> [<span style="color:#b08000">1</span>];
<span style="color:#0057ae">String</span> s <span style="color:#ca60ca">=</span> <span style="color:#bf0303">'''</span>
<span style="color:#bf0303">Multline string single quote</span>
<span style="color:#bf0303">'''</span>;
<span style="color:#0057ae">String</span> d <span style="color:#ca60ca">=</span> <span style="color:#bf0303">'''</span>
<span style="color:#bf0303">Multline string double quote</span>
<span style="color:#bf0303">'''</span>;
<span style="font-weight:bold">enum</span> Enum <span style="color:#ca60ca">{</span> one<span style="color:#ca60ca">,</span> two <span style="color:#ca60ca">}</span>
<span style="font-weight:bold">class</span> SimpleClass <span style="color:#ca60ca">{}</span>
<span style="font-weight:bold">abstract</span> <span style="font-weight:bold">class</span> Interface <span style="font-weight:bold">extends</span> SimpleClass <span style="color:#ca60ca">{}</span>
<span style="color:#0057ae">final</span> <span style="font-weight:bold">class</span> Dummy <span style="color:#ca60ca">{}</span>
<span style="color:#0057ae">Stream</span><span style="color:#ca60ca"><</span><span style="color:#0057ae">int</span><span style="color:#ca60ca">></span> gen() <span style="color:#0057ae">async</span><span style="color:#ca60ca">*</span> <span style="color:#ca60ca">{</span>
<span style="font-weight:bold">for</span> (<span style="color:#0057ae">int</span> i <span style="color:#ca60ca">=</span> <span style="color:#b08000">0</span>; i <span style="color:#ca60ca"><</span> <span style="color:#b08000">100</span>; <span style="color:#ca60ca">++</span>i) <span style="color:#ca60ca">{</span>
<span style="font-weight:bold">yield</span> <span style="font-weight:bold">switch</span> (i) <span style="color:#ca60ca">{</span>
<span style="color:#b08000">1</span> <span style="color:#ca60ca">=></span> <span style="color:#b08000">1</span><span style="color:#ca60ca">,</span>
_ <span style="color:#ca60ca">=></span> <span style="font-weight:bold">throw</span> <span style="color:#bf0303">"Invalid"</span><span style="color:#ca60ca">,</span>
<span style="color:#ca60ca">}</span>;
<span style="font-weight:bold">yield</span> i;
<span style="color:#ca60ca">}</span>
<span style="color:#ca60ca">}</span>
<span style="color:#0057ae">Future</span><span style="color:#ca60ca"><</span><span style="color:#0057ae">int</span><span style="color:#ca60ca">></span> printNum(<span style="color:#0057ae">int</span> anum) <span style="color:#0057ae">async</span> <span style="color:#ca60ca">{</span>
print(<span style="color:#bf0303">"This is a $anum</span><span style="color:#3daee9">\n</span><span style="color:#bf0303">"</span>);
print(<span style="color:#bf0303">'This is a $anum</span><span style="color:#3daee9">\n</span><span style="color:#bf0303"> </span><span style="color:#3daee9">\'</span><span style="color:#bf0303">world</span><span style="color:#3daee9">\'</span><span style="color:#bf0303">'</span>);
<span style="font-weight:bold">if</span> (anum <span style="color:#ca60ca">==</span> <span style="color:#b08000">1</span>) <span style="color:#ca60ca">{</span>
<span style="font-weight:bold">switch</span> (anum) <span style="color:#ca60ca">{</span>
<span style="font-weight:bold">case</span> <span style="color:#b08000">1</span><span style="color:#ca60ca">:</span>
<span style="font-weight:bold">return</span> <span style="color:#b08000">3</span>;
<span style="font-weight:bold">default</span><span style="color:#ca60ca">:</span>
<span style="color:#898887">// do while</span>
<span style="font-weight:bold">do</span> <span style="color:#ca60ca">{</span>
anum<span style="color:#ca60ca">--</span>;
<span style="color:#ca60ca">}</span> <span style="font-weight:bold">while</span> (anum <span style="color:#ca60ca"><</span> <span style="color:#b08000">0</span>);
<span style="color:#898887">// while</span>
<span style="font-weight:bold">while</span> (anum <span style="color:#ca60ca">></span> <span style="color:#b08000">0</span>) <span style="color:#ca60ca">{</span>
anum<span style="color:#ca60ca">--</span>;
<span style="color:#ca60ca">}</span>
<span style="font-weight:bold">break</span>;
<span style="color:#ca60ca">}</span>
<span style="font-weight:bold">return</span> <span style="color:#b08000">1</span>;
<span style="color:#ca60ca">}</span> <span style="font-weight:bold">else</span> <span style="color:#ca60ca">{</span>
<span style="font-weight:bold">return</span> <span style="color:#b08000">2</span>;
<span style="color:#ca60ca">}</span>
<span style="color:#ca60ca">}</span>
<span style="color:#898887">// What are you doing?</span>
<span style="color:#0057ae">void</span> main() <span style="color:#ca60ca">{</span>
<span style="color:#0057ae">final</span> <span style="color:#0057ae">int</span> nn <span style="color:#ca60ca">=</span> <span style="color:#b08000">10</span>;
<span style="color:#0057ae">double</span> dd <span style="color:#ca60ca">=</span> <span style="color:#b08000">1.5</span>;
<span style="color:#0057ae">double</span> de <span style="color:#ca60ca">=</span> <span style="color:#0057ae">double</span><span style="color:#ca60ca">.</span>nan;
<span style="color:#0057ae">bool</span> boolean <span style="color:#ca60ca">=</span> <span style="color:#aa5500">true</span>;
printNum(nn);
<span style="color:#ca60ca">}</span>
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