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Null vs. False vs. 0 in PHP

...other good "nothing" entities. What is the difference, specifically in PHP? Does it have something to do with === ? 1...
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What are all the common undefined behaviours that a C++ programmer should know about? [closed]

... Dereferencing a NULL pointer Dereferencing a pointer returned by a "new" allocation of size zero Using pointers to objects whose lifetime has ended (for instance, stack allocated objects or deleted objects) Dereferencing a pointer that has not yet been definitely initialized Performing pointer ar...
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MySQL ON DUPLICATE KEY - last insert id?

... It is said that php function mysql_insert_id() returns correct value in both cases: php.net/manual/en/function.mysql-insert-id.php#59718. – jayarjo Jun 10 '10 at 13:09 ...
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UIBarButtonItem with custom image and no border

...UIControlStateNormal]; UIBarButtonItem *random = [[UIBarButtonItem alloc] initWithCustomView:a1]; //? line incomplete ?// imageNamed:@"random.png"] style:UIBarButtonItemStylePlain target:self action:@selector(randomMsg)]; self.navigationItem.rightBarButtonItem = random; ...
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Where do I put image files, css, js, etc. in Codeigniter?

...ing on my setup, something similar to: application/helpers/utility_helper.php: function asset_url(){ return base_url().'assets/'; } I will usually keep common routines similar to this in the same file and autoload it with codeigniter's autoload configuration. Note: autoload URL helper fo...
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What are the Differences Between “php artisan dump-autoload” and “composer dump-autoload”?

...torials, I couldn't understand the difference between those two commands; php artisan dump-autoload and composer dump-autoload What's the difference between them? ...
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What Are the Differences Between PSR-0 and PSR-4?

...rc/, with PSR-0 it means it will look for Acme\Foo\Bar in src/Acme/Foo/Bar.php while in PSR-4 it will look for it in src/Bar.php, allowing for shorter directory structures. On the other hand some prefer to have the full directory structure to clearly see what is in which namespace, so you can also s...
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Asynchronous vs synchronous execution, what does it really mean? [closed]

...pt of doing two things at one time. The operating system simulates this by allocating slices of time to different threads. Now, if you introduce multiple cores/processors into the mix, then things CAN actually happen at the same time. The operating system can allocate time to one thread on the firs...
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Any recommendations for a CSS minifier? [closed]

... I like Minify. In PHP and works with CSS or JavaScript. share | improve this answer | follow | ...
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How do I convert NSMutableArray to NSArray?

...it autoreleased or not: /* Not autoreleased */ NSArray *array = [[NSArray alloc] initWithArray:mutableArray]; /* Autoreleased array */ NSArray *array = [NSArray arrayWithArray:mutableArray]; EDIT: The solution provided by Georg Schölly is a better way of doing it and a lot cleaner, especially ...