Singleton Implementation

gistfile1.m

+ (<#Class#> *)shared<#short class name#>
{
    static <#Class#> *shared<#short class name#> = nil;
    if (!shared<#short class name#>) {
        shared<#short class name#>  = [[super allocWithZone:nil] init];
    }
    return shared<#short class name#>;
}

+ (id)allocWithZone:(NSZone *)zone
{
    return [self shared<#short class name#>];
}