大约有 45,000 项符合查询结果(耗时:0.0646秒) [XML]

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What is the best collation to use for MySQL with PHP? [closed]

...QL (most currently distributed versions) where functions always return the string using utf8_general_ci, causing problems if you're using another collation for your strings - see bugs.mysql.com/bug.php?id=24690 – El Yobo Feb 9 '11 at 10:49 ...
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Why does Convert.ToString(null) return a different value if you cast null?

... There are 2 overloads of ToString that come into play here Convert.ToString(object o); Convert.ToString(string s); The C# compiler essentially tries to pick the most specific overload which will work with the input. A null value is convertible to a...
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How do I pass command-line arguments to a WinForms application?

... static void Main(string[] args) { // For the sake of this example, we're just printing the arguments to the console. for (int i = 0; i < args.Length; i++) { Console.WriteLine("args[{0}] == {1}", i, args[i]); } } The arguments w...
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Update a record without first querying?

...sons, you may want to pass in variables instead of a single hard coded SQL string. This will allow SQL Server to cache the query and reuse with parameters. Example: dataEntity.ExecuteStoreCommand ("UPDATE items SET itemstatus = 'some status' WHERE id = {0}", new object[] { 123 }); UPDATE - f...
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Default value in Go's method

...r chooses to use default values // Both parameters are optional, use empty string for default value func Concat1(a string, b int) string { if a == "" { a = "default-a" } if b == 0 { b = 5 } return fmt.Sprintf("%s%d", a, b) } **Option 2:** A single optional parameter at the end /...
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What is the difference between decodeURIComponent and decodeURI?

...back to the difference between the decode functions, each function decodes strings generated by its corresponding encode counterpart taking care of the semantics of the special characters and their handling. share |...
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What is the difference between encode/decode?

... The decode method of unicode strings really doesn't have any applications at all (unless you have some non-text data in a unicode string for some reason -- see below). It is mainly there for historical reasons, i think. In Python 3 it is completely gone....
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How to use SharedPreferences in Android to store, fetch and edit values [closed]

...s( "com.example.app", Context.MODE_PRIVATE); To read preferences: String dateTimeKey = "com.example.app.datetime"; // use a default value using new Date() long l = prefs.getLong(dateTimeKey, new Date().getTime()); To edit and save preferences Date dt = getSomeDate(); prefs.edit().putLo...
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Bash tool to get nth line from a file

...he trick, but I've been wondering if there's a Bash tool that specifically extracts a line (or a range of lines) from a file. ...
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Convert a string to regular expression ruby

I need to convert string like "/[\w\s]+/" to regular expression. 5 Answers 5 ...