大约有 47,000 项符合查询结果(耗时:0.0476秒) [XML]

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ActiveRecord: size vs count

In Rails, you can find the number of records using both Model.size and Model.count . If you're dealing with more complex queries is there any advantage to using one method over the other? How are they different? ...
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Where are $_SESSION variables stored?

... The location of the $_SESSION variable storage is determined by PHP's session.save_path configuration. Usually this is /tmp on a Linux/Unix system. Use the phpinfo() function to view your particular settings if not 100% sure by creating a file with this content in the DocumentRoot...
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To ARC or not to ARC? What are the pros and cons? [closed]

I've yet to use ARC, since the majority of the code in the project I'm working on at the moment was written pre-iOS 5.0. 6...
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Java string to date conversion

What is the best way to convert a String in the format 'January 2, 2010' to a Date in Java? 15 Answers ...
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Adding a background image to a element

Is it possible to make a <div> element contain a background image, and if so, how would I go about doing this? 9 An...
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Disable time in bootstrap date time picker

I am using bootstrap date time picker in my web application, made in PHP/HTML5 and JavaScript. I am currently using one from here: http://tarruda.github.io/bootstrap-datetimepicker/ ...
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How do I detect “shift+enter” and generate a new line in Textarea?

Currently, if the person presses enter inside the text area, the form will submit. Good, I want that. 13 Answers ...
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jQuery Scroll To bottom of the page

After my page is done loading. I want jQUery to nicely scroll to the bottom of the page, animating quickly, not a snap/jolt. ...
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How to get the connection String from a database

...d a database with SQL Server Management Studio, I would like to now use it in my C# application. I need the connection string? ...
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How to check file input size with jQuery?

...ties and I would like to be able to have some nice client side error reporting if the file the user is trying to upload is too big, is there a way to check against file size with jQuery, either purely on the client or somehow posting the file back to the server to check? ...