大约有 43,000 项符合查询结果(耗时:0.0464秒) [XML]

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Excel Date to String conversion

...ming cell A1 contains a date, and using VBA code: Dim strDate As String 'Convert to string the value contained in A1 (a date) strDate = CStr([A1].Value) You can, thereafter, manipulate it as any ordinary string using string functions (MID, LEFT, RIGHT, LEN, CONCATENATE (&), etc.) ...
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How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?

... You are so close! All you need to do is select BOTH the home and its max date time, then join back to the topten table on BOTH fields: SELECT tt.* FROM topten tt INNER JOIN (SELECT home, MAX(datetime) AS MaxDateTime FROM topten GROUP BY home) groupedtt ON tt.home = groupe...
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Why do I get the error “Unsafe code may only appear if compiling with /unsafe”?

...nsafe switch on. Open the properties for the project, go to the Build tab and check the Allow unsafe code checkbox. share | improve this answer | follow | ...
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Why is 'this' a pointer and not a reference?

I was reading the answers to this question C++ pros and cons and got this doubt while reading the comments. 2 Answers ...
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Most efficient way to remove special characters from string

...Regular expression: 294.4 ms. Edit 2: I added the distinction between A-Z and a-z in the code above. (I reran the performance test, and there is no noticable difference.) Edit 3: I tested the lookup+char[] solution, and it runs in about 13 ms. The price to pay is, of course, the initialization of...
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How to select records from last 24 hours using SQL?

... If the timestamp considered is a UNIX timestamp You need to first convert UNIX timestamp (e.g 1462567865) to mysql timestamp or data SELECT * FROM `orders` WHERE FROM_UNIXTIME(order_ts) > DATE_SUB(CURDATE(), INTERVAL 1 DAY) ...
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Formatting NSDate into particular styles for both year, month, day, and hour, minute, seconds

...at]; NSDate *date = [dateFormatter dateFromString:dateString]; // Convert date object into desired format //[dateFormatter setDateFormat:@"yyyy-MM-dd"]; [dateFormatter setDateFormat:destFormat]; NSString *newDateString = [dateFormatter stringFromDate:date]; return newDateStr...
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Why does modern Perl avoid UTF-8 by default?

...broken and dangerous. Might as well poke the other eye out, too. Code that converts unknown characters to ? is broken, stupid, braindead, and runs contrary to the standard recommendation, which says NOT TO DO THAT! RTFM for why not. Code that believes it can reliably guess the encoding of an unmarke...
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OrderBy descending in Lambda expression?

... As Brannon says, it's OrderByDescending and ThenByDescending: var query = from person in people orderby person.Name descending, person.Age descending select person.Name; is equivalent to: var query = people.OrderByDescending(person =>...
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JSF vs Facelets vs JSP [duplicate]

...f I understand correctly: JSF consists of all the component tag libraries, converter classes, validator classes, etc., whereas the "facelet" is simply the XHTML file that uses those component tags and binds to the backing beans? – Pam Jan 27 '11 at 11:44 ...