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Android XML Percent Symbol

...ol (aapt) has become very strict in its latest release and is now used for all Android versions. The aapt-error you're getting is generated because it no longer allows non-positional format specifiers. Here are a few ideas how you can include the %-symbol in your resource strings. If you don't nee...
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Why is '+' not understood by Python sets?

...t int/long) define this operation across a sequence of boolean values and call it "bitwise or". In fact this operation is so similar to the set union that binary integers are sometimes also called "Bit sets", where the elements in the set are taken to be the natural numbers. Because int already de...
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How to update bower.json with installed packages?

In my project I've installed bower components without save option. Now, I would like update to bower.json ? 6 Answers ...
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How to get instance variables in Python?

Is there a built-in method in Python to get an array of all a class' instance variables? For example, if I have this code: ...
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What does the “-U” option stand for in pip install -U

...find any docs for pip's command line options/arguments. What does pip install -U mean? Does anyone have a link to a list of pip's options and arguments? ...
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deleting rows in numpy array

... Thanks! I had the same problem, and I could not figure out why simply calling numpy.delete(x, index) didn't work. – Antimony Nov 20 '15 at 22:59 6 ...
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Difference between Observer, Pub/Sub, and Data Binding

... Here's my take on the three: Data Binding Essentially, at the core this just means "the value of property X on object Y is semantically bound to the value of property A on object B. No assumptions are made as to how Y knows or is fed changes on object B. Observer, or Obser...
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Does Redis persist data?

I understand that Redis serves all data from memory, but does it persist as well across server reboot so that when the server reboots it reads into memory all the data from disk. Or is it always a blank store which is only to store data while apps are running with no persistence? ...
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How to use shell commands in Makefile

... With: FILES = $(shell ls) indented underneath all like that, it's a build command. So this expands $(shell ls), then tries to run the command FILES .... If FILES is supposed to be a make variable, these variables need to be assigned outside the recipe portion, e.g.: F...
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using facebook sdk in Android studio

...h was written for earlier versions of both). If you're running the latest, all you need to do is this: Download the Facebook SDK from https://developers.facebook.com/docs/android/ Unzip the archive In Android Studio 0.5.5 or later, choose "Import Module" from the File menu. In the wizard, set the ...