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Getting root permissions on a file inside of vi? [closed]

Often while editing config files, I'll open one with vi and then when I go to save it realize that I didn't type 10 Answers...
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What's the difference between Ruby's dup and clone methods?

...asses may override these methods to provide different semantics. In Object itself, there are two key differences. First, clone copies the singleton class, while dup does not. o = Object.new def o.foo 42 end o.dup.foo # raises NoMethodError o.clone.foo # returns 42 Second, clone preserves th...
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How do I position one image on top of another in HTML?

... many images on a page. Some images are to lay on top of others. To make it simple, say I want a blue square, with a red square in the upper right corner of the blue square (but not tight in the corner). I am trying to avoid compositing (with ImageMagick and similar) due to performance issues. ...
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Format number to always show 2 decimal places

...m2"></span> <span id="num3"></span> Note that it will round to 2 decimal places, so the input 1.346 will return 1.35. share | improve this answer | ...
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What's the best solution for OpenID with Django? [closed]

Please note : this is an ancient question with ancient answers. Most of the linked apps are now unmaintained. These days, most people seem to use django-allauth or python-social-auth . I'll leave the original question intact below for posterity's sake. ...
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What is Double Brace initialization in Java?

What is Double Brace initialization syntax ( {{ ... }} ) in Java? 13 Answers 13 ...
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What's the meaning of exception code “EXC_I386_GPFLT”?

...s way to tell you that "you did something that you are not allowed to do". It typically DOESN'T mean that you access out of memory bounds, but it could be that your code is going out of bounds and causing bad code/data to be used in a way that makes for an protection violation of some sort. Unfort...
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Accessing MVC's model property from Javascript

... You could take your entire server-side model and turn it into a Javascript object by doing the following: var model = @Html.Raw(Json.Encode(Model)); In your case if you just want the FloorPlanSettings object, simply pass the Encode method that property: var floorplanSettings...
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One line ftp server in python

Is it possible to have a one line command in python to do a simple ftp server? I'd like to be able to do this as quick and temporary way to transfer files to a linux box without having to install a ftp server. Preferably a way using built in python libraries so there's nothing extra to install. ...
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$.focus() not working

... Actually the example you gave for focusing on this site works just fine, as long as you're not focused in the console. The reason that's not working is simply because it's not stealing focus from the dev console. If you run the following code in your console and then quickly c...