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How can I store my users' passwords safely?
...f every dictionary word prefixed by your fixed salt.
A better way is each time a user changes their password, your system generate a random salt and store that salt along with the user record. It makes it a bit more expensive to check the password (since you need to look up the salt before you can...
Converting XML to JSON using Python?
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After so long time, I am a bit surprised xmltodict is not a "standard" library in some linux distributions. Altough it seems doing the job straight from what we can read, I will unfortunately use another solution like xslt conversion
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Why does “split” on an empty string return a non-empty array?
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If you split an orange zero times, you have exactly one piece - the orange.
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Iterating through a list in reverse order in java
...e, which is quite a huge side-effect. (Say you wrap this in a method, each time it is called you traverse the list the other way ^^)
– jolivier
Feb 14 '14 at 19:04
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Skip List vs. Binary Search Tree
... skip lists but only barely.
transactional skip lists are consistently 2-3 times slower than the locking and non-locking versions.
locking red-black trees croak under concurrent access. Their performance degrades linearly with each new concurrent user. Of the two known locking red-black tree imple...
Merge multiple lines (two blocks) in Vim
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You have to press [Enter] after :5 both times you type it or this won't work.
– Shawn J. Goff
May 26 '12 at 4:14
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How to write very long string that conforms with PEP8 and prevent E501
...ost terminals being unable to show > 80 characters on a line), but over time they become functionally obsolete, but still rigidly adhered to. I guess what you need to do here is weigh up the relative merits of "breaking" that particular suggestion against the readability and mainatinability of y...
Why is my Git Submodule HEAD detached from master?
I am using Git submodules. After pulling changes from server, many times my submodule head gets detached from master branch.
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PHP DateTime::modify adding and subtracting months
I've been working a lot with the DateTime class and recently ran into what I thought was a bug when adding months. After a bit of research, it appears that it wasn't a bug, but instead working as intended. According to the documentation found here :
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Efficient way to determine number of digits in an integer
...t numbers
template <>
int numDigits(char n)
{
// if you have the time, replace this with a static initialization to avoid
// the initial overhead & unnecessary branch
static char x[256] = {0};
if (x[0] == 0) {
for (char c = 1; c != 0; c++)
x[c] = numDigi...