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Maximum Java heap size of a 32-bit JVM on a 64-bit OS
The question is not about the maximum heap size on a 32-bit OS, given that 32-bit OSes have a maximum addressable memory size of 4GB, and that the JVM's max heap size depends on how much contiguous free memory can be reserved.
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How to properly overload the
...n a class, it seems like we cannot implement with Matrix::operator<<(ostream& os, const Matrix& m). Instead we need to just use global operator override operator<<ostream& os, const Matrix& m) so why even bother to declare it inside class in the first place?
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致PHP路上的“年轻人” - PHP - 清泛IT社区，为创新赋能！
...。而我当年也有他们的困惑。虽然自己也还年轻，但作为一个阶段告以段落的“过来人”，还是想写点东西给“年轻人”。关于如何成长？我直白的答案还是建议通过实践，通过项目来成长。虽然提倡多参加项目，但项目不能是...
Technically, why are processes in Erlang more efficient than OS threads?
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There are several contributing factors:
Erlang processes are not OS processes. They are implemented by the Erlang VM using a lightweight cooperative threading model (preemptive at the Erlang level, but under the control of a cooperatively scheduled runtime). This means that it is much chea...
How do I check if I'm running on Windows in Python? [duplicate]
...e platform module but it says it returns 'Windows' and it's returning 'Microsoft' on my machine. I notice in another thread here on stackoverflow it returns 'Vista' sometimes.
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Maven Install on Mac OS X
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OS X prior to Mavericks (10.9) actually comes with Maven 3 built in.
If you're on OS X Lion, you won't have java installed by default. Just run java by itself and it'll prompt you to install it.
Assuming qualifications a...
MVC演化史 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...逻辑，而View关注外在的可视的逻辑。
多种表现形式：同一个Model往往需要多种View表现形式，如文本、图像。
提高可测试性：相对Model而言，View是不容易测试的。
从View中分离Controller就不那么重要了。Desktop软件的时代，View...
Is there a portable way to get the current username in Python?
...e that works under both Linux and Windows, at least). It would work like os.getuid :
12 Answers
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Get path of executable
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There is no cross platform way that I know.
For Linux: readlink /proc/self/exe
Windows: GetModuleFileName
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Detect iPad users using jQuery?
...e (and can be spoofed). It's preferred to use actual feature-detection in most cases, which can be done through a library like Modernizr.
As pointed out in Brennen's answer, issues can arise when performing this detection within the Facebook app. Please see his answer for handling this scenario.
R...