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Adding data attribute to DOM

...ement within jquery. After that, I want to add attribute "data". He's like and is added, but in the DOM, this is not apparent, and I can't get the item, using ...
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How to switch a user per task or set of tasks?

...ng theme that's in my ansible playbooks is that I often must execute a command with sudo privileges ( sudo: yes ) because I'd like to do it for a certain user. Ideally I'd much rather use sudo to switch to that user and execute the commands normally. Because then I won't have to do my usual post com...
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Scala: List[Future] to Future[List] disregarding failed futures

...re's a twist... The list I'm given usually has around 10-20 futures in it, and it's not uncommon for one of those futures to fail (they are making external web service requests). Instead of having to retry all of them in the event that one of them fails, I'd like to be able to get at the ones that s...
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Simple basic explanation of a Distributed Hash Table (DHT)

...e now independent nodes in a network. This gives a lot of fault-tolerance and reliability, and possibly some performance benefit, but it also throws up a lot of headaches. For example, what happens when a node leaves the network, by failing or otherwise? And how do you redistribute keys when a node...
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Is it possible to specify your own distance function using scikit-learn K-Means Clustering?

...mple 2 pass, first sample sqrt(N) from __future__ import division import random import numpy as np from scipy.spatial.distance import cdist # $scipy/spatial/distance.py # http://docs.scipy.org/doc/scipy/reference/spatial.html from scipy.sparse import issparse # $scipy/sparse/csr.py __date__ ...
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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?

... @blub: If you create a unique key on geb and topic it will work (ALTER TABLE table ADD UNIQUE geb_by_topic (geb, topic)). – chaos Aug 2 '09 at 13:43 ...
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git: switch branch without detaching head

I have a repository on github with a main branch (master) and a branch for some experimental work. I made some commits and pushed to the experimental branch and everything was fine. ...
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Matplotlib: “Unknown projection '3d'” error

I just installed matplotlib and am trying to run one of there example scripts. However I run into the error detailed below. What am I doing wrong? ...
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Find what filetype is loaded in vim

As soon as I load any file in vim, It'll try to detect the file and color-highlight it if possible. 5 Answers ...
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How can I generate a diff for a single file between two branches in github

... me to do this for all changed files, but that's no good as there are thousands of files in my repo. 5 Answers ...