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Effects of changing Django's SECRET_KEY

...ed, the signature will fail to verify and the user will have to re-authenticate. For any users that have requested links for a password reset or a custom file download, those links will no longer be valid. The users would simply have to re-request those links. Someone with more recent and/or salie...
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What exactly are iterator, iterable, and iteration?

... that method on the object passed to it. For example: >>> s = 'cat' # s is an ITERABLE # s is a str object that is immutable # s has no state # s has a __getitem__() method >>> t = iter(s) # t is an ITERATOR ...
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How do I daemonize an arbitrary script in unix?

... "Checking pid in file $PIDFILE." #Check to see if process running. PID=$(cat $PIDFILE 2>/dev/null) if [[ $? = 0 ]]; then ps -p $PID >/dev/null 2>&1 if [[ $? = 0 ]]; then echo "Command $1 already running." exit fi fi # Write our pid to file. echo $$ >$PI...
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Is gcc 4.8 or earlier buggy about regular expressions?

...d is the GCC major version Testing You can test it with GCC like this: cat << EOF | g++ --std=c++11 -x c++ - && ./a.out #include <regex> #if __cplusplus >= 201103L && \ (!defined(__GLIBCXX__) || (__cplusplus >= 201402L) || \ ...
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What is the (best) way to manage permissions for Docker shared volumes?

...body belongs to a group with a group id equal to TARGET_GID EXISTS=$(cat /etc/group | grep $TARGET_GID | wc -l) # Create new group using target GID and add nobody user if [ $EXISTS == "0" ]; then groupadd -g $TARGET_GID tempgroup usermod -a -G tempgroup nobody else # GID exi...
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Is calculating an MD5 hash less CPU intensive than SHA family functions?

...sum $ uname -mov #1 SMP Mon May 13 12:16:08 EDT 2019 ppc64le GNU/Linux $ cat /proc/cpuinfo processor : 0 cpu : POWER9, altivec supported clock : 2166.000000MHz revision : 2.2 (pvr 004e 1202) $ ls -l linux-master.tar -rw-rw-r-- 1 x x 829685760 Jan 29 14:30 linux-...
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Why is require_once so bad to use?

... I'm fairly sure you're right Bobby but I'm not advocating the defines over _once. It's just an option. The time it would take to interpret the code might even make it marginally slower but, that said, I don't know how thorough the internal method is. It might do extra work to...
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How to implement a rule engine?

... fast executable code (using Expression trees) and does not need any complicated switch statements: (Edit : full working example with generic method) public Func<User, bool> CompileRule(Rule r) { var paramUser = Expression.Parameter(typeof(User)); Expression expr = BuildExpr(r, paramUs...
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Evenly distributing n points on a sphere

...Alternatively, building on the other answer here (and using Python): > cat ll.py from math import asin nx = 4; ny = 5 for x in range(nx): lon = 360 * ((x+0.5) / nx) for y in range(ny): midpt = (y+0.5) / ny ...
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Using IPython notebooks under version control

.../ipynb_output_filter.py git config --global filter.dropoutput_ipynb.smudge cat Done! Limitations: it works only with git in git, if you are in branch somebranch and you do git checkout otherbranch; git checkout somebranch, you usually expect the working tree to be unchanged. Here instead you w...