Singleton: Difference between revisions
Added non-thread-safe C++ version, subcategorized ObjC and C++ examples.
(Added non-thread-safe C++ version, subcategorized ObjC and C++ examples.) |
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=={{header|C++}}==
===Thread-safe===
'''Operating System:''' Microsoft Windows NT/XP/Vista
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</pre>
===Non-Thread-Safe===
This version doesn't require any operating-system or platform-specific features, but it is not safe in a multi-threaded environment.
<pre>
class Singleton
{
public:
static Singleton* Instance()
{
// Since it's a static variable, if the class has already been created,
// It won't be created again.
static Singleton myInstance;
// Return a pointer to our mutex instance.
return &myInstance;
}
// Any other public methods
protected:
Singleton()
{
// Constructor code goes here.
}
~Singleton()
{
// Destructor code goes here.
}
// And any other protected methods.
}
</pre>
=={{header|Objective-C}}==
===Non-Thread-Safe===
(Using Cocoa's NSObject as a base class)
<pre>
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