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Converting integer to binary in python
...ro-padded on the left
b converts the number to its binary representation
If you're using a version of Python 3.6 or above, you can also use f-strings:
>>> f'{6:08b}'
'00000110'
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How to use greater than operator with date?
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what happens if its timestamp?
– ichimaru
Jul 19 '18 at 6:16
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How to automatically navigate to the current class in Intellij Idea Project Tool Window?
...tl-F1 to show the Gnome Activities Overview by default (which is redundant if you have a Windows/Cmd key on your keyboard). Just go into Settings > Keyboard > "Show the activities overview", click and then hit Backspace to clear the keyboard mapping. Then it will work.
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How to get the primary IP address of the local machine on Linux and OS X? [closed]
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Use grep to filter IP address from ifconfig:
ifconfig | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*' | grep -v '127.0.0.1'
Or with sed:
ifconfig | sed -En 's/127.0.0.1//;s/.*inet (addr:)?(([0-9]*\.){3}[0-9]*).*/\2/p'
If you...
Unable to find a locale path to store translations for file __init__.py
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Turns out you need to create a locale folder first using mkdir locale. If you are running the command from within an app folder, you need a locale folder within that app folder.
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Rails: select unique values from a column
...ts. Not plain ratings. And from uniq's point of view, they are completely different. You can use this:
Model.select(:rating).map(&:rating).uniq
or this (most efficient)
Model.uniq.pluck(:rating)
# rails 5+
Model.distinct.pluck(:rating)
Update
Apparently, as of rails 5.0.0.1, it works onl...
How do I convert a Ruby class name to a underscore-delimited symbol?
...ut you will have to install ActiveSupport just to do that, as ipsum says.
If you don't want to install ActiveSupport just for that, you can monkey-patch underscore into String yourself (the underscore function is defined in ActiveSupport::Inflector):
class String
def underscore
word = self.d...
ThreadStatic v.s. ThreadLocal: is generic better than attribute?
...s defined using attribute while ThreadLocal<T> uses generic.
Why different design solutions were chosen?
What are the advantages and disadvantages of using generic over attributes in this case?
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Uncatchable ChuckNorrisException
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I haven't tried this, so I don't know if the JVM would restrict something like this, but maybe you could compile code which throws ChuckNorrisException, but at runtime provide a class definition of ChuckNorrisException which does not extend Throwable.
UPDATE:
I...
What are all codecs and formats supported by FFmpeg?
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That would only be a list of formats supported by a specific build/installation of FFmpeg. There are a very wide range of FFmpeg builds in use.
– mikerobi
Oct 5 '11 at 19:02
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