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GUI not working after rewriting to MVC
...he Model manages a single Piece, chosen at random. In response to a user's selection, the View invokes the check() method, while listening for a response from the Model via update(). The View then updates itself using information obtained from the Model. Similarly, the Controller may reset() the Mod...
Emacs mode for Stack Overflow's markdown
...s/, and then export to markdown.
From emacs you can convert to markdown by selecting the region, hitting C-u M-S-\ and typing pandoc -r org -t markdown, getting output like this:
In other words, you can keep writing in org-mode, including writing italics *like this*, and then export to markdown.
...
Android YouTube app Play Video Intent
...Tube app for my emulator, or...
2. What is the intent used when the user selects a video for playback.
18 Answers
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How to implement the activity stream in a social network
...criber, I do a simple join of the three tables. The join is fast because I select few activities thanks to a WHERE condition that looks like now - time > some hours. I avoid other joins thanks to data field in Activity table.
Further explanation on reason field. If, for example, I want to filter...
Will Try / Finally (without the Catch) bubble the exception?
...such a delegate would allow the code which manipulated the object state to select appropriate cleanup action if it's disrupted. Such actions might include repairing the data structure and returning True, throwing another "more severe" exception which wraps the original one, or letting the original ...
Why was the arguments.callee.caller property deprecated in JavaScript?
...g and tail recursion impossible in the general case (you can achieve it in select cases through tracing etc, but even the best code is sub optimal due to checks that would not otherwise be necessary). The other major issue is that the recursive call will get a different this value, for example:
va...
Difference between Rebuild and Clean + Build in Visual Studio
..., right click on the desired project name in the Solution Explorer tab and select Set as StartUp project. The project name now appears in bold. Since the homework solutions typically have only one project, Build or Rebuild Solution is effectively the same as Build or Rebuild .
Compile just compiles...
Coding Practices which enable the compiler/optimizer to make a faster program
...w customer\n"
"3) Destroy\n"
"4) Launch Nasal Demons\n"
"Enter selection: ";
static const size_t Menu_Text_Length = sizeof(Menu_Text) - sizeof('\0');
//...
std::cout.write(Menu_Text, Menu_Text_Length);
The efficiency of this technique can be visually demonstrated. :-)
Don't use print...
浅谈APM在电子交易系统中的应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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慢的原因是因为执行了两条 Database dt_manager_log-select 语句。还有更详细的的，看看是怎么调用的
清晰的看到具体的语句，是怎么调用， 很明显这就是一个查询语句而查询的速度这么慢肯定是不正常的
接...
How do you convert a byte array to a hexadecimal string, and vice versa?
... }
return result;
}
static uint[] _Lookup32 = Enumerable.Range(0, 255).Select(i => {
string s = i.ToString("X2");
return ((uint)s[0]) + ((uint)s[1] << 16);
}).ToArray();
static string ByteArrayToHexViaLookupPerByte(byte[] bytes) {
var result = new char[bytes.Length * 2];
...