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Python list subtraction operation
...set(x) - set(y))
>>> z
[0, 8, 2, 4, 6]
Or you might just have x and y be sets so you don't have to do any conversions.
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How can I debug my JavaScript code? [closed]
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I like firebug, but I wouldn't claim it to be head and shoulders above webkit's inspector.
– Ryan Florence
Jun 12 '09 at 19:00
2
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How to convert a String to CharSequence?
...uence. It simply assigns an instance of String to a CharSequence variable, and since String implements the CharSequence interface, the code works.
– João Silva
Oct 16 '10 at 12:06
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The most efficient way to implement an integer based power function pow(int, int)
... break;
base *= base;
}
return result;
}
This is the standard method for doing modular exponentiation for huge numbers in asymmetric cryptography.
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How to Git stash pop specific stash in 1.8.3?
...ash@{1} is ambiguous?" for some detailed hints of what may be going wrong, and how to work around it in various shells and platforms.
git stash list
git stash apply stash@{n}
git stash apply version
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How do I enable C++11 in gcc?
...th a capital M). To automatically compile your code just type the make command in a terminal. You may have to install make.
Here's a simple one :
CXX=clang++
CXXFLAGS=-g -std=c++11 -Wall -pedantic
BIN=prog
SRC=$(wildcard *.cpp)
OBJ=$(SRC:%.cpp=%.o)
all: $(OBJ)
$(CXX) -o $(BIN) $^
%.o: %.c...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
...y alignment constraints. Data structure alignment impacts both performance and correctness of programs:
Mis-aligned access might be a hard error (often SIGBUS).
Mis-aligned access might be a soft error.
Either corrected in hardware, for a modest performance-degradation.
Or corrected by emulation...
Script to get the HTTP status code of a list of urls?
...rs will notice that this uses one curl process per URL, which imposes fork and TCP connection penalties. It would be faster if multiple URLs were combined in a single curl, but there isn't space to write out the monsterous repetition of options that curl requires to do this.)
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How do I add a path to PYTHONPATH in virtualenv
... you can also navigate to your virtual environment's site-packages folder and create a symbolic link to the .pth file like this: ln -s path/to/somfile.pth. I found this useful when I needed the same directory to be accessible in multiple virtual environments
– Data-phile
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Custom CSS Scrollbar for Firefox
...verflow.com/a/54101063/405015
https://stackoverflow.com/a/53739309/405015
And this for background info: https://bugzilla.mozilla.org/show_bug.cgi?id=1460109
There's no Firefox equivalent to ::-webkit-scrollbar and friends.
You'll have to stick with JavaScript.
Plenty of people would like this feat...