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Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
...olescent gettimeofday() function", so you should stay away from it. Linux x86 and implements it as a system call.
mach_absolute_time() is an option for very high resolution (ns) timing on OS X. On my system, this does indeed give ns resolution. In principle this clock wraps around, however it is sto...
How do arrays in C# partially implement IList?
...
86
So as you may know, arrays in C# implement IList<T>, among other interfaces
Well, ye...
Fastest sort of fixed length 6 int array
... 150.96
Insertion Sort Unrolled 316.20 133.03 129.86 118.96 105.06
Rank Order 164.37 138.32 46.29 99.87 99.81
Rank Order with registers 115.44 116.02 44.04 116.04 116.03
Sorting Networks (Daniel Stutzbac...
How exactly does __attribute__((constructor)) work?
...needed as it's still in place. The call in the inline assembly however is x86-mnemonic and calling a function from assembly would look completely different for many other architectures (like ARM for example). I.e. code is not transparent.
.init/.fini and .ctors/.detors mechanisms are similar, but n...
Token Authentication vs. Cookies
...
86
I still don't understand why a token is better/different than a cookie. One way or another you are sending something to the api server that...
When would anyone use a union? Is it a remnant from the C-only days?
...typedef union
gcrypt.h: union
gcrypt.h: union
gcrypt.h: union
gmp-i386.h: union {
ieee754.h:union ieee754_float
ieee754.h:union ieee754_double
ieee754.h:union ieee854_long_double
ifaddrs.h: union
jpeglib.h: union {
ldap.h: union mod_vals_u {
ncurses.h: union
newt.h: union {
obstack.h...
How to extract a git subdirectory and make a submodule out of it?
...
Both CoolAJ86 and apenwarr answers are very similar. I went back and forth between the two trying to understand bits that were missing from either one. Below is a combination of them.
First navigate Git Bash to the root of the git repo...
Java default constructor
...
@Gab是好人 it's called a "no-argument" or "no-arg" constructor.
– OrangeDog
Apr 13 '17 at 15:00
...
Difference between maven scope compile and provided for JAR packaging
...ncy ==> the dependency will NOT be packaged.
– Gab是好人
May 1 '17 at 21:11
3
The OP confus...
How do you Encrypt and Decrypt a PHP String?
...hese password-hashing algorithms:
Argon2
scrypt
bcrypt
PBKDF2-SHA256 with 86,000 iterations
Never use a general-purpose hash function (MD5, SHA256) for password storage.
Don't encrypt URL Parameters. It's the wrong tool for the job.
PHP String Encryption Example with Libsodium
If you are on PHP &l...