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Debug.Assert vs Exception Throwing
...s that "should not happen but do".
Assertions are useful because at build time (or even run time) you can change their behavior. For example, often in release builds, the asserts aren't even checked, because they introduce unneeded overhead. This is also something to be wary of: your tests may no...
conditional unique constraint
...e the constraint against a set of inserts rather than just one insert at a time. ashish is asking for a constraint on one insert at a time and this constraint will work accurately, predictably, and consistently. I'm sorry if this sounded terse; I was running out of characters.
...
Why use Abstract Base Classes in Python?
... I suspect it was added to allow (for e.g.) Set to inherit from it. By the time you get to Set, suddenly belonging to the the ABC has considerable semantics. An item can't belong to the collection twice. That is NOT detectable by the existence of methods.
– Oddthinking
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Objective-C ARC: strong vs retain and weak vs assign
... and all weak pointers will be
zeroed out.
When we use weak?
The only time you would want to use weak, is if you wanted to avoid retain cycles
(e.g. the parent retains the child and the child retains the parent so neither is ever released).
3.retain = strong
it is retained, old value is rel...
Injecting $scope into an angular service function()
...'t any right now, don't be surprised if they start popping up soon).
Every time a new student is added (using the service's save() method), the service's own array of students will be updated and every other object sharing that array will get automatically updated as well.
Based on the approach des...
Why does pylint object to single character variable names?
... code that might stick around for a decade or more, and be read many, many times.
Use semantic names. Semantic names I've used have been like ratio, denominator, obj_generator, path, etc. It may take an extra second or two to type them out, but the time you save trying to figure out what you wrote ...
What components are MVC in JSF MVC framework?
... both philosophy,generally it is more the case with big arch. view in real time projects.
– Jigar Joshi
Feb 24 '11 at 12:55
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The purpose of Model View Projection Matrix
... keeping them as a single modelview matrix stack. You therefore also sometimes see that reflected in shaders.
So: the composed model view projection matrix is often used by shaders to map from the vertices you loaded for each model to the screen. It's not required, there are lots of ways of achievi...
Citrix服务器虚拟化：XenApp 6.5发布服务器上的应用程序 - 更多技术 - 清泛...
...面上虚拟化：1)服务器桌面：发布场中服务器的整个Windows桌面，插...XenApp可发布以下类型的资源向用户提供信息访问，这些资源可在服务器或桌面上虚拟化：
1) 服务器桌面：发布场中服务器的整个Windows 桌面，插件连接到服务...
Booleans, conditional operators and autoboxing
...turnsNull() method affects the static typing of the expressions at compile time:
E1: `true ? returnsNull() : false` - boolean (auto-unboxing 2nd operand to boolean)
E2: `true ? null : false` - Boolean (autoboxing of 3rd operand to Boolean)
See Java Language Specification, section 15.25 Condition...