大约有 44,000 项符合查询结果(耗时:0.0255秒) [XML]

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Update multiple rows in same query using PostgreSQL

...; -- populate table with dummy rows insert into results_dummy (id, status) select unnest(array[1,2,3,4,5]::int[]) as id, unnest(array['a','b','c','d','e']::text[]) as status; select * from results_dummy; -- THE update of multiple rows with/by different values update results_dummy as rd set stat...
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Build project into a JAR automatically in Eclipse

...con on build.xml. Step 2 Right-click on the root node in the project. - Select Properties - Select Builders - Select New - Select Ant Build - In the Main tab, complete the path to the build.xml file in the bin folder. Check the Output The Eclipse output window (named Console) should show...
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SqlException from Entity Framework - New transaction is not allowed because there are other threads

... IList<Client> clientList = from a in _dbFeed.Client.Include("Auto") select a; foreach (RivWorks.Model.NegotiationAutos.Client client in clientList) { var companyFeedDetailList = from a in _dbRiv.AutoNegotiationDetails where a.ClientID == client.ClientID select a; // ... } ...
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How do I disable form fields using CSS?

...e not been set. To retrieve and change DOM properties such as the checked, selected, or disabled state of form elements, use the .prop() method." Source Documentation: .attr() and .prop() – Nicholas Ryan Bowers May 11 '15 at 19:58 ...
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onKeyPress Vs. onKeyUp and onKeyDown

...tabbing. Scenario: The user types 12345 into an input element. The user selects the text 12345. The user types the letter A. When the keypress event fires after entering the letter A, the text box now contains only the letter A. But: Field.val() is 12345. $Field.val().length is 5 The user se...
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getting type T from IEnumerable

... t.GetGenericTypeDefinition() == typeof(IEnumerable<>)) .Select(t => t.GetGenericArguments()[0]); } Some objects implement more than one generic IEnumerable so it is necessary to return an enumeration of them. Edit: Although, I have to say, it's a terrible idea for a class to...
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How to exclude certain messages by TAG name using Android adb logcat?

... manpage: v, --invert-match Invert the sense of matching, to select non-matching lines. For example: $adb logcat | grep --invert-match 'notshownmatchpattern' You can extend this by using regular expressions. Here is an example of such an expression: "/^(?:emails|tags|addresses...
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LINQ: Distinct values

...d it should be okay: var query = doc.Elements("whatever") .Select(element => new { id = (int) element.Attribute("id"), category = (int) element.Attribute("cat") }) .Distinct(); If you're trying to get a dis...
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How to completely uninstall Android Studio on Mac?

...s "any" click on "kind" --> Others --> search for "system file" and select that by putting a tick mark.! And click on Ok. Then select "are included" from the drop down menu ! Then you get a lot of system file that need to be deleted to complete the fully un-installation of any app. Click "c...
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Distinct not working with LINQ to Objects

...ey were hit during the foreach loop. This is because the var temp = books.SelectMany(book => book.Authors).Distinct(); returns an IEnumerable, meaning that the request is not executed right away, it is only executed when the data is used. If you would like an example of this firing right away, ...