大约有 22,000 项符合查询结果(耗时:0.0571秒) [XML]

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What is the default value for enum variable?

... Thanks, and what about enums defined with char instead of int. e.g. enum Status { Active = 'A', Inactive='I'} – Fernando Torres Apr 24 '15 at 16:17 ...
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How long should SQL email fields be? [duplicate]

...l address can basically be indefinitely long so any size I impose on my varchar email address field is going to be arbitrary. However, I was wondering what the "standard" is? How long do you guys make it? (same question for Name field...) ...
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How to throw a C++ exception

...e the example (of what NOT to do): #include <iostream> #include <string> using namespace std; class MyException : public exception { public: MyException(const string& msg) : m_msg(msg) { cout << "MyException::MyException - set m_msg to:" << m_msg <&l...
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Where is C not a subset of C++? [closed]

...zeof('a') is equal to sizeof(int). In C++, sizeof('a') is equal to sizeof(char). share | improve this answer | follow | ...
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Executing Batch File in C#

...streams in order to find out what's happening: static void ExecuteCommand(string command) { int exitCode; ProcessStartInfo processInfo; Process process; processInfo = new ProcessStartInfo("cmd.exe", "/c " + command); processInfo.CreateNoWindow = true; processInfo.UseShellEx...
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Best way to store time (hh:mm) in a database

... line. ALWAYS consider all time zones. C# A DateTime renders nicely to a string in C#. The ToString(string Format) method is compact and easy to read. E.g. new TimeSpan(EventStart.Ticks - EventEnd.Ticks).ToString("h'h 'm'm 's's'") SQL server Also if you're reading your database seperate to y...
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get current url in twig template?

...ute_parameters won't work if you have some additional params in your query string. You could use app.request.query.all instead. – wdev Nov 26 '12 at 17:42 add a comment ...
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@try - catch block in Objective-C

... All work perfectly :) NSString *test = @"test"; unichar a; int index = 5; @try { a = [test characterAtIndex:index]; } @catch (NSException *exception) { NSLog(@"%@", exception.reason); NSLog(@"Char at index %d cannot be found", ...
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How can I echo a newline in a batch file?

... Is it possible while providing a string within a single echo statement? – Brian R. Bondy Sep 25 '08 at 11:52 6 ...
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What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort

...eading ‘+’ nor exponential notation is recognized. To compare such strings numerically, use the --general-numeric-sort (-g) option. share | improve this answer | f...