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Is there a way to remove the separator line from a UITableView?
...de. This is done automatically in grouped, but this also changes the dimensions of the table in a way that is hard to measure. I have set the seperator line color to colorClear. But this does not completely solve the problem.
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Are PDO prepared statements sufficient to prevent SQL injection?
...hat should have been data, as if it was code. This is only possible if you mix code and data in the same medium (Eg. when you construct a query as a string).
Parameterised queries work by sending the code and the data separately, so it would never be possible to find a hole in that.
You can still ...
How expensive is RTTI?
...xtra cost for RTTI, and it's not due to just having an if statement in the mix. It's due to that RTTI is very expensive.
This test was done on the Apple LLVM 5.0 compiler, with stock optimizations turned on (default release mode settings).
So, I have below 2 functions, each of which figures out th...
How to “properly” create a custom object in JavaScript?
...aper over some of the uglier parts of the language.
The result is that in mixed company you will have a mishmash of metaclasses, all behaving slightly differently. What's worse, most JavaScript tutorial material is terrible and serves up some kind of in-between compromise to cover all bases, leavin...
Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
...rks don't seek to combine GC and RAII, since most applications will have a mix of immutable objects (where GC would be best) and objects that need cleanup (where RAII is best).
– supercat
Oct 11 '12 at 21:03
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Redis strings vs Redis hashes to represent JSON: efficiency?
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It depends on how you access the data:
Go for Option 1:
If you use most of the fields on most of your accesses.
If there is variance on possible keys
Go for Option 2:
If you use just single fields on most of your accesses.
If you always know which fields are available...
How do SO_REUSEADDR and SO_REUSEPORT differ?
The man pages and programmer documentations for the socket options SO_REUSEADDR and SO_REUSEPORT are different for different operating systems and often highly confusing. Some operating systems don't even have the option SO_REUSEPORT . The WEB is full of contradicting information regarding th...
HTML5 check if audio is playing?
What's the javascript api for checking if an html5 audio element is currently playing?
9 Answers
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Check if a class is derived from a generic class
...;& j == 0) { j=0; } Am I getting my reference equals and value equals mixed up? I thought there was only one instance of each Type in memory, so two variables that point to the same type are in fact pointing to the same location in memory.
– Michael Blackburn
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Why can't I initialize non-const static member or static array in class?
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I think it's to prevent you from mixing declarations and definitions. (Think about the problems that could occur if you include the file in multiple places.)
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