大约有 43,000 项符合查询结果(耗时:0.0528秒) [XML]

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How do you effectively model inheritance in a database?

...etimes needed, when you want to load a list of all records (without doing select on each and every child table). One way to handle this, is to have one column representing the type of the child class (similar to the rowType field in the TPH), so mixing the TPT and TPH somehow. Say we want to des...
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How can I push a local Git branch to a remote with a different name easily?

... Rebase is a smart merge. Then push to master again and you’ll see the selected feature branch as master on the new repo. Optional: git remote rm upstream git remote add upstream new-repo-url share | ...
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LINQ to Entities only supports casting EDM primitive or enumeration types with IEntity interface

...i eventually found the solution which was for my extension method to call .Select(e => e as T) where T is the child class and e is the base class. full details are here: Create IQueryable<T> extension using base class in EF ...
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How to use WinForms progress bar?

... This should be the selected answer, IMO. Great answer! – JohnOpincar Feb 8 '17 at 22:09 ...
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The quest for the Excel custom function tooltip

...{ return v1 + v2; } we get both the function description and when selecting the function, we get argument help That looks nice, but it's all still very flaky, only works on my machine and sometimes crashes Excel. It might be a start, though... Update 9 May 2014: I've made some progre...
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scala vs java, performance and memory? [closed]

...ing where your Scala example only does it once after the Strings have been selected? I.e. they are optimised in different ways for different data sets? – Seth May 9 '12 at 1:53 ...
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How do I configure emacs for editing HTML files that contain Javascript?

...n but a quick fix if you really need to have javascript in your html is to select the region containing javascript and use the command narrow-to-region(C-x n n) and then switch to your preferred javascript mode. The command widen brings you back, (C-x n w). ...
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Are arrays passed by value or passed by reference in Java? [duplicate]

... this is the most useful answer period; not just for you. Why it isn't the selected answer is beyond me. – WhozCraig May 3 '18 at 10:31 ...
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Bootstrap combining rows (rowspan)

... a row doesn't have to use row-fluid to accomplish this as suggested by my selected answer. I really appreciate it though! – Seong Lee May 3 '13 at 5:36 ...
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Copy constructor versus Clone()

...will have to use it. List<T> aList = new List<T>(aFullListOfT.Select(t=t.Clone()) – DanO Jan 13 '14 at 23:06 1 ...