大约有 47,000 项符合查询结果(耗时:0.0561秒) [XML]

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How to remove elements from a generic list while iterating over it?

... Select the elements you do want rather than trying to remove the elements you don't want. This is so much easier (and generally more efficient too) than removing elements. var newSequence = (from el in list ...
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Two submit buttons in one form

... For i18n purposes it might be better to use the selected answer. – Robin Green Nov 29 '12 at 16:08 11 ...
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MySQL join with where clause

... You need to put it in the join clause, not the where: SELECT * FROM categories LEFT JOIN user_category_subscriptions ON user_category_subscriptions.category_id = categories.category_id and user_category_subscriptions.user_id =1 See, with an inner join, putting a claus...
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What are advantages of Artificial Neural Networks over Support Vector Machines? [closed]

..., an SVM (at least a kernelized one) consists of a set of support vectors, selected from the training set, with a weight for each. In the worst case, the number of support vectors is exactly the number of training samples (though that mainly occurs with small training sets or in degenerate cases) an...
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How to view revision history for Mercurial file?

...a while to figure out how. You need to right-click on the desired file and select "File History". However, for some mysterious reason, the file needs to be unaltered. Furthermore, to find the desired file there are two options: In ### revision set query### one can type: file("**<myfile>") ...
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How to create .pfx file from certificate and private key?

... simple. Under the SSL tab, I first Imported the Certificate. Then once I selected the Certificate I was able to export as a PFX, both with and without a keyfile. https://www.digicert.com/util share | ...
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Unique Constraint in Entity Framework Code First

...n k in uniqueAtt.KeyFields on pi.Name equals k select new { KeyField = k, Value = pi.GetValue(entity, null).ToString() }; foreach (var item in _objectSet) { var keyValues = from pi in item.GetType().GetProperties() j...
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JPA: what is the proper pattern for iterating over large result sets?

...essSession(); Query query = session .createQuery("SELECT a FROM Address a WHERE .... ORDER BY a.id"); query.setFetchSize(Integer.valueOf(1000)); query.setReadOnly(true); query.setLockMode("a", LockMode.NONE); ScrollableResults results = query....
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Changing the case of a string in Eclipse

How do I make a lowercase string uppercase using Eclipse? I want to select a string and either uppercase it or lowercase it. Is there a shortcut for doing this? ...
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How to connect to SQL Server database from JavaScript in the browser?

...onnectionstring); var rs = new ActiveXObject("ADODB.Recordset"); rs.Open("SELECT * FROM table", connection); rs.MoveFirst while(!rs.eof) { document.write(rs.fields(1)); rs.movenext; } rs.close; connection.close; A better way to connect to a sql server would be to use some server side lang...