大约有 47,000 项符合查询结果(耗时:0.0550秒) [XML]

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Convert a list of objects to an array of one of the object's properties

... You are looking for MyList.Select(x=>x.Name).ToArray(); Since Select is an Extension method make sure to add that namespace by adding a using System.Linq to your file - then it will show up with Intellisense. ...
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C programming in Visual Studio

...project (not for the solution), expand Configuration Properties, C/C++ and select Advanced. Change the Compile As setting to Compile as C Code (/TC). https://docs.microsoft.com/en-us/cpp/ide/visual-cpp-project-types?view=vs-2017 ...
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Removing fields from struct or hiding them in JSON Response

...ending back to the caller. I'd now like to allow the caller to be able to select the specific fields they would like returned by passing in a "fields" GET parameter. ...
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Why is the Windows cmd.exe limited to 80 characters wide?

... It isn't. You can right click the title bar, select properties, and in the "Layout" tab alter the screen buffer size (line width and scrollback) and the window size (viewport size). If you started cmd from a shortcut, you can save these settings for future sessions. ...
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Disabled form fields not submitting data [duplicate]

...entioned: READONLY does not work for <input type='checkbox'> and <select>...</select>. If you have a Form with disabled checkboxes / selects AND need them to be submitted, you can use jQuery: $('form').submit(function(e) { $(':disabled').each(function(e) { $(this).rem...
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How do I find which transaction is causing a “Waiting for table metadata lock” state?

...about all the locks transactions are waiting for: USE INFORMATION_SCHEMA; SELECT * FROM INNODB_LOCK_WAITS; A list of blocking transactions: SELECT * FROM INNODB_LOCKS WHERE LOCK_TRX_ID IN (SELECT BLOCKING_TRX_ID FROM INNODB_LOCK_WAITS); OR SELECT INNODB_LOCKS.* FROM INNODB_LOCKS JOIN INNOD...
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MySQL convert date string to Unix timestamp

... Here's an example of how to convert DATETIME to UNIX timestamp: SELECT UNIX_TIMESTAMP(STR_TO_DATE('Apr 15 2012 12:00AM', '%M %d %Y %h:%i%p')) Here's an example of how to change date format: SELECT FROM_UNIXTIME(UNIX_TIMESTAMP(STR_TO_DATE('Apr 15 2012 12:00AM', '%M %d %Y %h:%i%p')),'%m-%d-...
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jQuery Selector: Id Ends With?

Is there a selector that I can query for elements with an ID that ends with a given string? 9 Answers ...
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C# - Selectively suppress custom Obsolete warnings

... }, onDemand: true, discardSelector: ".discard-answer" ,immediatelyShowMarkdownHelp:true,enableSnippets:true }); } }); ...
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jQuery: select all elements of a given class, except for a particular Id

... Use the :not selector. $(".thisclass:not(#thisid)").doAction(); If you have multiple ids or selectors just use the comma delimiter, in addition: (".thisclass:not(#thisid,#thatid)").doAction(); ...