大约有 40,000 项符合查询结果(耗时:0.0417秒) [XML]

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Copy values from one column to another in the same table

...ific set of rows: UPDATE `products` SET `in_stock` = true WHERE `supplier_id` = 10 share | improve this answer | follow | ...
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Convert XmlDocument to String

...a side note: always dispose disposable objects: using (var stringWriter = new StringWriter()) using (var xmlTextWriter = XmlWriter.Create(stringWriter)) { xmlDoc.WriteTo(xmlTextWriter); xmlTextWriter.Flush(); return stringWriter.GetStringBuilder().ToString(); } ...
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AttributeError: 'datetime' module has no attribute 'strptime'

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HTTP Basic Authentication credentials passed in URL and encryption

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Upgrading PHP in XAMPP for Windows?

...ny other, please take back up of those files as well and replace them with newly installed version. share | improve this answer | follow | ...
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How to do Mercurial's 'hg remove' for all missing files?

... This will add all new files that are not ignored, and remove all locally missing files hg addremove Either of these will remove all locally missing files(They are the same command) hg remove --after hg remove -A ...
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Uses for Optional

...aving been using Java 8 now for 6+ months or so, I'm pretty happy with the new API changes. One area I'm still not confident in is when to use Optional . I seem to swing between wanting to use it everywhere something may be null , and nowhere at all. ...
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In SQL, how can you “group by” in ranges?

...score range], count(*) as [number of occurrences] from ( select user_id, case when score >= 0 and score< 10 then '0-9' when score >= 10 and score< 20 then '10-19' else '20-99' end as range from scores) t group by t.range ...
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How to count objects in PowerShell?

...ray.) 2012.01.30 Update The above is true for PowerShell V2. One of the new features of PowerShell V3 is that you do have a Count property even for singletons, so the at-sign becomes unimportant for this scenario. share ...
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Differences between std::make_unique and std::unique_ptr with new

...make_unique is safe for creating temporaries, whereas with explicit use of new you have to remember the rule about not using unnamed temporaries. foo(make_unique<T>(), make_unique<U>()); // exception safe foo(unique_ptr<T>(new T()), unique_ptr<U>(new U())); // unsafe* The ...