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一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术
...也有了新的问题：真实的黄金是需要开采和冶炼的，金矿有限，开采和冶炼也需要成本，所以没有人可以短期凭空制造大量的黄金，可写字就不同了，只要我纸够笔够，随便像写多少写多少，那这就变成拼谁家里纸多了，搞不好...
What should I use Android AccountManager for?
...r.
Accounts can be added independently through Settings → Accounts
Cross-platform user authorization can be easily managed using Accounts. For example, the client can access protected material at the same time in their android device and PC without the need for recurrent logins.
From the security ...
Explicitly calling return in a function or not
...alized
# R version 2.15
The picture above may slightly difffer on your platform.
Based on measured data, the size of returned object is not causing any difference, the number of repeats (even if scaled up) makes just a very small difference, which in real word with real data and real algorithm c...
Is it better to specify source files with GLOB or each file individually in CMake?
.... The only problems are: 1) it probably has to be done by cmake to be crossplatform and so we need to avoid cmake running itself second time somehow. 2) Possibly more merge conflicts (which still happen with file list btw) They could actually be resolved trivially in this case by taking later timest...
Handling click events on a drawable within an EditText
...ctice, leading to undefined behaviour that would likely break on different platforms, so perhaps a better solution could be stackoverflow.com/a/6235602
– Giulio Piancastelli
Jul 1 '12 at 8:10
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Coding Practices which enable the compiler/optimizer to make a faster program
... coding practice to help the compiler create fast code—any language, any platform, any compiler, any problem:
Do not use any clever tricks which force, or even encourage, the compiler to lay variables out in memory (including cache and registers) as you think best. First write a program which is...
Combining C++ and C - how does #ifdef __cplusplus work?
... the actual ABIs are not compatible at all to the C++ program at different platforms.
People might still like to implement the actual program in C++ but still keep the old C interface and ABI as usual, the header file has to declare extern "C" {}, it tells the compiler generate compatible/old/simpl...
Practical usage of setjmp and longjmp in C
...mstances where you have total control over your environment (some embedded platforms).
In my experience in most cases whenever you think that using setjmp/longjmp would work, your program is clear and simple enough that every intermediate function call in the call chain can do error handling, or it...
Difference between sh and bash
...a bash shebang line in almost all cases as it's quite ubiquitous on modern platforms.
NB: in some environments, sh is bash. Check sh --version.
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Difference between Repository and Service Layer?
...obile/web)? If thats the case then the viewmodel may differ from different platforms
– Ryan
Sep 17 '11 at 17:45
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