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Nokogiri installation fails -libxml2 is missing

... First, install the dependencies: sudo apt-get install libxslt-dev libxml2-dev If you still receive the error, you may be missing a compiler toolchain: sudo apt-get install build-essential You'll get the "libxml2 is missing" error if you're missing a build toolchain (at least I ran into th...
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Java compiler level does not match the version of the installed Java project facet

... The Project Facet->Java should match whatever you have in the pom.xml for the maven-compiler-plugin artifact source and target. – Arye Rosenstein Nov 4 '12 at 6:26 4 ...
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In Python, how do you convert seconds since epoch to a `datetime` object?

... as a follow-on to the above, with Python >= 3.2 you don't have to import the pytz library if you only want the UTC timestamp - you only need to from datetime import datetime, timezone and then call it as follows: datetime.fromtimestamp(1423524051, timezone...
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How to get the nth element of a python list or a default if not available

I'm looking for an equivalent in python of dictionary.get(key, default) for lists. Is there any one liner idiom to get the nth element of a list or a default value if not available? ...
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Can I avoid the native fullscreen video player with HTML5 on iPhone or android?

...m having this issue too. I have added the webkit-playsinline and even the xml validated version of webkit-playsinline="webkit-playsinline", but doesn't change the behavior – mike clagg Mar 14 '11 at 21:24 ...
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Removing transforms in SVG files

...remove transforms in Inkscape Open svg file in Inkscape Go to Edit -> XML Editor Find "transform" attributes in layers and delete them How to move all objects altogether without creating another transform attributes Go to Edit -> Select All in All Layers Go to Object -> Transform In...
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How do I keep track of pip-installed packages in an Anaconda (Conda) environment?

I've installed and have been using the Anaconda Python distribution, and I have started using the Anaconda (Conda) environment. I can use the standard conda install... command to put packages from the distribution into my environments, but to use anything outside (i.e. Flask-WTF, flask-sqlalchem...
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What's the pythonic way to use getters and setters?

... Try this: Python Property The sample code is: class C(object): def __init__(self): self._x = None @property def x(self): """I'm the 'x' property.""" print("getter of x called") return self...
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subtract two times in python

... using python 2.7, I don't have combine method in my datetime module: AttributeError: 'module' object has no attribute 'combine' – mtoloo Jul 28 '16 at 12:32 ...
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Android Camera : data intent returns null

...w project, I just had to change three files for my purpose: activity_main.xml : <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools...