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What is the easiest way to remove all packages installed by pip?
...you need to exclude those lines and remove the packages manually (elevated from the comments below):
pip freeze | grep -v "^-e" | xargs pip uninstall -y
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Replace a string in shell script using a variable
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Maybe also point out that switching from single to double quotes requires any $ or ` in the sed script to be escaped with a backslash, to protect it from the shell's substitution mechanism for double-quoted strings.
– tripleee
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LinkedBlockingQueue vs ConcurrentLinkedQueue
...mes in, and inefficiencies when it's empty (due to waking up unnecessarily from sleeps).
From the docs for BlockingQueue:
BlockingQueue implementations are designed to be used primarily for producer-consumer queues
I know it doesn't strictly say that only blocking queues should be used for pr...
How do I create a nice-looking DMG for Mac OS X using command-line tools?
...s points for auto-copying to /Applications if the app detects it's running from ~/Downloads. See also this old article by John Gruber.
– Andrey Tarantsov
Apr 7 '16 at 14:52
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What's the best way of implementing a thread-safe Dictionary?
I was able to implement a thread-safe Dictionary in C# by deriving from IDictionary and defining a private SyncRoot object:
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Android ListView Divider
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The problem you're having stems from the fact that you're missing android:dividerHeight, which you need, and the fact that you're trying to specify a line weight in your drawable, which you can't do with dividers for some odd reason. Essentially to get you...
How do synchronized static methods work in Java and can I use it for loading Hibernate entities?
...en this would happen anyway in the DB, because the RDBMS will prevent them from inserting half information from A and half from B at the same time. The result will be the same but only 5 times ( or more ) slower.
Probably it could be better to take a look at the "Transactions and Concurrency" chapt...
Static Vs. Dynamic Binding in Java
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From Javarevisited blog post:
Here are a few important differences between static and dynamic binding:
Static binding in Java occurs during compile time while dynamic binding occurs during runtime.
private, fi...
Daemon Threads Explanation
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From Joe's blog post: "Update June 2015: This is Python bug 1856. It was fixed in Python 3.2.1 and 3.3, but the fix was never backported to 2.x. (An attempt to backport to the 2.7 branch caused another bug and it was abandone...
android fragment onRestoreInstanceState
... it? its fine for configuration changes, but what if you go to an activity from a fragment and then go back to the fragment?
– speedynomads
Jun 4 '13 at 16:41
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