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What is the difference between Python's list methods append and extend?

... Actually there's a big difference - x + [4, 5] gives you a new list assigned to x - x.extend() mutates the original list. I elaborate in my answer here below. – Aaron Hall♦ Jul 17 '17 at 1...
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Using Emacs to recursively find and replace in text files not already open

...to find out how to do something like this which should be easy, that especially stops me from getting more used to using Emacs and instead starting up the editor I'm already familiar with. I use the example here fairly often in editing multiple files. ...
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How to delete an item in a list if it exists?

...emethod will remove only the first occurrence of thing, in order to remove all occurrences you can use while instead of if. while thing in some_list: some_list.remove(thing) Simple enough, probably my choice.for small lists (can't resist one-liners) 2) Duck-typed, EAFP style: This shoot-f...
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Completion block for popViewController

... Joris KluiversJoris Kluivers 11.1k11 gold badge4242 silver badges4646 bronze badges ...
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Modifying location.hash without page scrolling

...reated and placed at the current location of the scroll. It's the same visually as position:fixed/top:0. Thus the scrollbar is "moved" to the exact same spot it currently is on. – Borgar Sep 29 '09 at 0:44 ...
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Natural Sort Order in C#

... @linquize - He said .NET not Mono, so Linux/OSX isn't really a concern. Windows Phone/Metro didn't exist in 2008 when this answer was posted. And how often do you do file operations in Silverlight? So for the OP, and probably most other people, it was a suitable answer. In any cas...
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Disable cache for some images

... Please note: You do not actually prevent the browser from caching the image, you only prevent looking at the cached image. Applying proper headers to your image is the best way imho (see the solution of lhunath below). Since this way you also fill the c...
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How to unit test an object with database queries

I've heard that unit testing is "totally awesome", "really cool" and "all manner of good things" but 70% or more of my files involve database access (some read and some write) and I'm not sure how to write a unit test for these files. ...
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How to split a string and assign it to variables

... I like Go but I wouldn't call this flexible :D – Pijusn May 25 '17 at 4:27 add a comment  |  ...
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Change Twitter Bootstrap Tooltip content on click

...ust found this today whilst reading the source code. So $.tooltip(string) calls any function within the Tooltip class. And if you look at Tooltip.fixTitle, it fetches the data-original-title attribute and replaces the title value with it. So we simply do: $(element).tooltip('hide') .att...