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How do I provide custom cast support for my class?

...ou want users to have to cast it or whether you want it to happen automagically. Generally, one direction will always work, that's where you use implicit, and the other direction can sometimes fail, that's where you use explicit. The syntax is like this: public static implicit operator dbInt64(Byt...
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Do I set properties to nil in dealloc when using ARC?

... Short answer: no, you do not have to nil out properties in dealloc under ARC. Long answer: You should never nil out properties in dealloc, even in manual memory management. In MRR, you should release your ivars. Nilling out properties means calling setters, which may invoke code that...
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Multiple Updates in MySQL

...has new records then i will end up inserting only the ids and count except all other information. if and only if there is an entry for the id then it should update else it should skip. what shall i do? – Jayapal Chandran Aug 30 '10 at 13:30 ...
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Understanding scala enumerations

...er Value representing the individual elements of the enumeration (it's actually an inner class, but the difference doesn't matter here). Thus object WeekDay inherits that type member. The line type WeekDay = Value is just a type alias. It is useful, because after you import it elsewhere with import...
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How do I determine the target architecture of static library (.a) on Mac OS X?

...cutable ppc Example with archive: logan:/Users/logan% file /usr/lib/libMallocDebug.a /usr/lib/libMallocDebug.a: Mach-O universal binary with 2 architectures /usr/lib/libMallocDebug.a (for architecture i386): current ar archive random library /usr/lib/libMallocDebug.a (for architecture ppc): ...
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Get notified when UITableView has finished asking for data?

...eload its data. So, when the second NSLog is fired, the table view has actually finish asking for data. I've subclassed UITableView to send methods to the delegate before and after reloadData. It works like a charm. share ...
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error: ‘uint16_t’ does not name a type - c++1y / stl - 清泛IT社区,为创新赋能!

...ight notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ...
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Trying to login to RDP using AS3

...emporary ByteArray that has its endian set to big, write data in it, then call writeBytes() on your main buffer array, then clear the temporary big endian array. Writing constants can be done manually, since you can shift the byte order yourself, say when you are writing 0x0005 in big endian as shor...
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How to declare string constants in JavaScript? [duplicate]

... There's no constants in JavaScript, but to declare a literal all you have to do is: var myString = "Hello World"; I'm not sure what you mean by store them in a resource file; that's not a JavaScript concept. ...
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What's the difference between console.dir and console.log?

... @icedwater: Depends on whether you have the console open when you call console.log or open it later. Yes, really. :-) – T.J. Crowder Jun 22 '17 at 17:12 ...