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Scala: Abstract types vs generics

..., define left and join methods in all classes and get right and double for free class ReprO extends OO[ReprO] { override type A = ReprA override type B = ReprB override type C = ReprC } case class ReprA(data : Int) extends AA[ReprO] { override def left(l:B):C = ReprC(data - l.data) overri...
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Bytecode features not available in the Java language

...ess. So only final methods are truly guaranteed by the JVM to be exception-free - aside from RuntimeExceptions and Errors, of course. So much for checked exception handling :D – leviathanbadger May 4 '13 at 3:35 ...
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Functional, Declarative, and Imperative Programming [closed]

.... generally the declarative approach is considered preferable, because it frees the programmer from having to specify so many details, while also having less chance for bugs (if you describe the result you want, and some well-tested automatic process can work backwards from that to define the steps...
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Alternatives to gprof [closed]

... reason why gprof is popular - it is being taught, presumably because it's free, easy to teach, and it's been around a long time. A quick Google search locates some academic institutions that teach it (or appear to): berkeley bu clemson colorado duke earlham fsu indiana mit msu ncsa.illinois...
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How does StartCoroutine / yield return pattern really work in Unity?

... by placing a while(true); in any of your functions or coroutines. It will freeze the whole thing, even the Unity editor. This is evidence that everything runs in one main thread. This link that Kay mentioned in his above comment is also a great resource. (*) Unity calls your functions from one th...
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Memcached vs. Redis? [closed]

...l of your data to disk with almost no performance degradation. It's almost free! In snapshot mode there is a chance that a sudden crash could result in a small amount of lost data. If you absolutely need to make sure no data is ever lost, don't worry, redis has your back there too with AOF (Append O...
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How to get device make and model on iOS?

...el = [NSString stringWithCString:model encoding:NSUTF8StringEncoding]; free(model); return de
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mmap() vs. reading blocks

...ws)4. Finally, even in user-space accessing such a mapping isn't exactly free (compared to large memory buffers not originating from a file-based mmap) - even once the page tables are set up, each access to a new page is going to, conceptually, incur a TLB miss. Since mmaping a file means using th...
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For-each over an array in JavaScript

...ys a possible surprise hiding in long for and while loops). It gives you a free scope for closures. It reduces leakage of local variables and accidental collision with (and mutation of) outer variables. Then when you do see the reverse for loop in your code, that is a hint that it is reversed for ...
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MFC Grid control 2.27 - C/C++ - 清泛网 - 专注IT技能提升

...ontrol from scratch but decided to save time by modifying Joe Willcoxson's free WorldCom grid control at http://users.aol.com/chinajoe/wcmfclib.html. I tore apart his code and rebuilt it from the ground up in order to get it to do all the things I needed. The code has gone through so many modificati...