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What is copy-on-write?
...ou want the rest of the implementation to work, such as file\data locking, etc.
– Puddler
Jul 10 '16 at 23:05
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I can’t find the Android keytool
...ith the Java SDK. You should find it in the directory that contains javac, etc.
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How do I install Python OpenCV through Conda?
...ped with tons of useful packages, such as NumPy, Pandas, IPython Notebook, etc. It seems to be recommended everywhere in the scientific community. Check out Anaconda to get it installed.
Install OpenCV-Python to Anaconda
Cautious Note: I originally tried out installing the binstar.org OpenCV packa...
Understanding the map function
...ol things map() can do.
map() can take multiple iterables (lists, strings, etc.) and pass an element from each iterable to a function as an argument.
We have three lists:
list_one = [1, 2, 3, 4, 5]
list_two = [11, 12, 13, 14, 15]
list_three = [21, 22, 23, 24, 25]
map() can make you a new list th...
Why do we need virtual functions in C++?
...- obviously wrapping the variable declaration and calls in a main function etc. Pointer-to-derived implicitly casts to pointer-to-base (more specialized implicitly casts to more general). Visa-versa you need an explicit cast, usually a dynamic_cast. Anything else - very prone to undefined behavior s...
Make a Bash alias that takes a parameter?
...h() { mv "$@" ~/.Trash; }
That's it! You can use parameters $1, $2, $3, etc, or just stuff them all with $@
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Implicit “Submit” after hitting Done on the keyboard at the last EditText
...rst. It will also play the "click" sound as though the button were tapped, etc.
– Extragorey
May 1 '17 at 23:47
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background function in Python
... contexts when there are other "greenlets" running. Worries about locking, etc are much reduced, as there is only one thing running at a time, yet the image will continue to download whenever a blocking operation executes in the "main" context.
Depending on how much, and what kind of thing you want...
Getting visitors country from their IP
...ebsite to get any data, the website might go down, the service could stop, etc. And if you get an increased number of visitors on your website, this service could ban you.
– machineaddict
Jun 19 '15 at 8:12
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Bidirectional 1 to 1 Dictionary in C#
...d RemoveBySecond would be trivial - as would implementing extra interfaces etc.
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