大约有 30,000 项符合查询结果(耗时:0.0424秒) [XML]

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Check, using jQuery, if an element is 'display:none' or block on click

I want to check and sort elements that are hidden. Is it possible to find all elements with attribute display and value none ? ...
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How can I overwrite a getter method in an ActiveRecord model?

... The Rails Style Guide recommends using self[:attr] over read_attribute(:attr). You can use it like this: def name name_trans || self[:name] end share | ...
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Recommended way to embed PDF in HTML?

...er how the PDF appears in the browser by passing some options in the query string. I was happy to this working, until I realized it does not work in IE8. :( It works in Chrome 9 and Firefox 3.6, but in IE8 it shows the message "Insert your error message here, if the PDF cannot be displayed." I h...
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Is it possible to modify variable in python that is in outer, but not global, scope?

... would mean grandparent <module> aka global The second argument is a string or code object you want to execute in the given scope You can also call it without arguments for interactive shell inside your program The long answer This is more complicated. Seapie works by editing the frames i...
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Understanding the main method of python [duplicate]

...n a file is being executed then __name__ is set to "__main__" (the literal string: __main__). This is almost always used to separate the portion of code which should be executed from the portions of code which define functionality. So Python code often contains a line like: #!/usr/bin/env python ...
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How to delete migration files in Rails 3

...our table or columns. Another great reference for migrations is: http://guides.rubyonrails.org/migrations.html share | improve this answer | follow | ...
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MySQL - Make an existing Field Unique

... But removes all the duplicates including those outside the columns – Biasi Wiga Mar 17 at 12:13 add a comment  |  ...
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How can I delete a newline if it is the last character in a file?

...a trailing \n due to setting the output-record separator (OFS) to an empty string. If you want a verbose, but fast and robust solution that truly edits in-place (as opposed to creating a temp. file that then replaces the original), consider jrockway's Perl script. ...
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Pretty print in MongoDB shell as default

... (note: this is answer to original version of the question, which did not have requirements for "default") You can ask it to be pretty. db.collection.find().pretty() share | improve this ...
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How do I include a file over 2 directories back?

... since it has only disadvantages. Or (the third alternative) you could use string manipulation to extract parent directory from the (expanded) current path but once again this doesn’t have any advantages to using relative paths. – Konrad Rudolph Aug 20 '12 at...