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<span style="color:#27ae60">#import </span><span style="color:#27ae60"><Fondation/Fondation.h></span>
<span style="color:#7a7c7d">// Simple class</span>
<span style="font-weight:bold">@interface</span> MyClass <span style="color:#3f8058">:</span> Object <span style="color:#3f8058">{</span>
<span style="color:#7a7c7d">// instance variables</span>
<span style="color:#2980b9">int</span> myVariable
<span style="color:#3f8058">}</span>
<span style="color:#7a7c7d">// Class methods</span>
<span style="color:#3f8058">+</span> myClassMethod<span style="color:#3f8058">;</span>
<span style="color:#3f8058">+</span> <span style="color:#3f8058">(</span><span style="color:#2980b9">int</span><span style="color:#3f8058">)</span>myClassMethod2<span style="color:#3f8058">;</span>
<span style="color:#3f8058">+</span> <span style="color:#3f8058">(</span><span style="color:#2980b9">int</span><span style="color:#3f8058">)</span>myClassMethod3<span style="color:#3f8058">:(</span>NSString <span style="color:#3f8058">*)</span>parameter<span style="color:#3f8058">;</span>
<span style="color:#7a7c7d">// Instance methods</span>
<span style="color:#3f8058">-</span> <span style="color:#3f8058">(</span><span style="color:#2980b9">int</span><span style="color:#3f8058">)</span>myInstanceMethod<span style="color:#3f8058">:(</span>NSString <span style="color:#3f8058">*)</span>text<span style="color:#3f8058">;</span>
<span style="color:#3f8058">-</span> <span style="color:#3f8058">(</span>NSString <span style="color:#3f8058">*)</span>myInstanceMethod2<span style="color:#3f8058">:(</span><span style="color:#2980b9">int</span><span style="color:#3f8058">)</span>parameter
withText<span style="color:#3f8058">:(</span>NSString <span style="color:#3f8058">*)</span>text<span style="color:#3f8058">;</span>
<span style="font-weight:bold">@end</span>
<span style="font-weight:bold">@implementation</span> MyClass
<span style="color:#3f8058">+</span> <span style="color:#3f8058">(</span><span style="color:#2980b9">int</span><span style="color:#3f8058">)</span>classMethod <span style="color:#3f8058">{</span>
<span style="font-weight:bold">return</span> <span style="color:#3f8058">[</span><span style="font-weight:bold">self</span> myVariable<span style="color:#3f8058">];</span>
<span style="color:#3f8058">}</span>
<span style="color:#3f8058">-</span> <span style="color:#3f8058">(</span>NSString <span style="color:#3f8058">*)</span>instanceMethod <span style="color:#3f8058">{</span>
NSString <span style="color:#3f8058">*</span>string <span style="color:#3f8058">=</span> <span style="color:#3f8058">[[</span>NSString alloc<span style="color:#3f8058">]</span>initWithUTF8String<span style="color:#3f8058">:</span><span style="color:#f44f4f">"Good string ©"</span><span style="color:#3f8058">];</span>
NSLog<span style="color:#3f8058">(</span><span style="color:#f44f4f">@"String:%@"</span><span style="color:#3f8058">,</span>string<span style="color:#3f8058">);</span>
<span style="font-weight:bold">return</span> string<span style="color:#3f8058">;</span>
<span style="color:#3f8058">}</span>
<span style="font-weight:bold">@end</span>
<span style="color:#7a7c7d">// Protocol</span>
<span style="font-weight:bold">@protocol</span> MyKeyProtocol
<span style="color:#3f8058">-</span> <span style="color:#3f8058">(</span><span style="color:#2980b9">void</span><span style="color:#3f8058">)</span>lock<span style="color:#3f8058">;</span>
<span style="color:#3f8058">-</span> <span style="color:#3f8058">(</span><span style="color:#2980b9">void</span><span style="color:#3f8058">)</span>unlock<span style="color:#3f8058">;</span>
<span style="font-weight:bold">@end</span>
<span style="color:#7a7c7d">// Class that implements a protocol</span>
<span style="font-weight:bold">@interface</span> MyClass2 <span style="color:#3f8058">:</span> Object <span style="color:#3f8058"><</span>MyKeyProtocol<span style="color:#3f8058">></span> <span style="color:#3f8058">{</span>
<span style="color:#3f8058">}</span>
<span style="color:#7a7c7d">// Protocol methods</span>
<span style="color:#3f8058">-</span> <span style="color:#3f8058">(</span><span style="color:#2980b9">void</span><span style="color:#3f8058">)</span>lock<span style="color:#3f8058">;</span>
<span style="color:#3f8058">-</span> <span style="color:#3f8058">(</span><span style="color:#2980b9">void</span><span style="color:#3f8058">)</span>unlock<span style="color:#3f8058">;</span>
<span style="font-weight:bold">@end</span>
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