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What does 'var that = this;' mean in JavaScript?

... @El Ronnoco, but "He's got gray hair and a scraggly beard and his manner brings to mind a grumpy old man who yells at kids to get off of his lawn." - blogging.compendiumblog.com/blog/software-for-humans/0/0/… ;-p – David Murdoch ...
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How can I add a hint text to WPF textbox?

... You can accomplish this much more easily with a VisualBrush and some triggers in a Style: <TextBox> <TextBox.Style> <Style TargetType="TextBox" xmlns:sys="clr-namespace:System;assembly=mscorlib"> <Style.Resources> <Vi...
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Can clearInterval() be called inside setInterval()?

I have the code above and sometimes it is working, sometimes it is not. I am wondering if the clearInterval actually clear the timer?? because there is this monitor button that will only be disabled when it is in monitoring function. I have another clearInterval when an element called .outp...
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What guarantees are there on the run-time complexity (Big-O) of LINQ methods?

I've recently started using LINQ quite a bit, and I haven't really seen any mention of run-time complexity for any of the LINQ methods. Obviously, there are many factors at play here, so let's restrict the discussion to the plain IEnumerable LINQ-to-Objects provider. Further, let's assume that any...
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How to strike through obliquely with css

...with a CSS transform. Doing it this way adds no extra elements to the DOM, and adding/removing the strikethrough is a simple as adding/removing the class. Here's a demo Caveats This will only work down to IE8. IE7 does not support :before, however will degrade gracefully in browsers that do supp...
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How do I Convert DateTime.now to UTC in Ruby?

...ateTime.now.utc Oops! That seems to work in Rails, but not vanilla Ruby (and of course that is what the question is asking) d = Time.now.utc Does work however. Is there any reason you need to use DateTime and not Time? Time should include everything you need: irb(main):016:0> Time.now =&gt...
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Use git “log” command in another folder

...e folder B. Folder B is another git project (so log is different between A and B). 2 Answers ...
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Adding onClick event dynamically using jQuery

...d the "onClick" attribute to the HTML form inputs like usual. A plugin is handling the forms part in my site and it doesn't give an option to do this automatically. ...
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Java ArrayList replace at specific index

I need help with this java please. I created an ArrayList of bulbs, and I'm trying to replace a bulb at specific index with another bulb. So with the following heading, how do I proceed? ...
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MySQL Multiple Joins in one query?

...want to do a LEFT OUTER JOIN which will return all your dashboard messages and an image_filename only if one exists (otherwise you'll get a null) SELECT dashboard_data.headline, dashboard_data.message, dashboard_messages.image_id, images.filename FROM dashboard_data INNER JOIN dashboard_messag...