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What's the difference between utf8_general_ci and utf8_unicode_ci?
...ligible. It was devised in a time when servers had a tiny fraction of the CPU performance of today's computers.
Benefits of utf8mb4_unicode_ci over utf8mb4_general_ci
utf8mb4_unicode_ci, which uses the Unicode rules for sorting and comparison, employs a fairly complex algorithm for correct sortin...
Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
... a lot of activity going on under the hood of the OS, which can steal some CPU time and slow down the execution of your code. That’s why it is best to execute the tests multiple times and then remove the lowest and the highest times. For that puprose it is a good solution to have a method that exe...
How can bcrypt have built-in salts?
... rainbow tables, which are lists of common passwords, or just brute force, etc... of different passwords but hashed. Without salt, the hash for a password in database A would be the same as a hash for a password in database B. Salt merely changes up the hash values making it harder for someone who...
Printing Java Collections Nicely (toString Doesn't Return Pretty Output)
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stack.toArray() might be very expensive, cpu, time and memory wise. a Solution that iterates over the original collection/iterable would probably be less resource consuming.
– AlikElzin-kilaka
Feb 14 '19 at 10:24
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How to create a sub array from another array in Java?
... something like REP STOSW by the JIT (in which case the loop is inside the CPU).
int[] src = new int[] {1, 2, 3, 4, 5};
int[] dst = new int[3];
System.arraycopy(src, 1, dst, 0, 3); // Copies 2, 3, 4 into dst
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What is an uninterruptible process?
...uest of the driver, and when the actual device (hard disk / network card / etc) delivers the data, ignore it. An OS kernel should be made in a way that NO developer can screw it up.
– Dexter
Jan 25 '17 at 10:24
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Load and execution sequence of a web page?
...et is doing, and
whether or not anything has errors
and has to be re-fetched. This may
seem like a weird way of doing
things, but it would quite literally
be impossible for the Internet (not
just the WWW) to work with any degree
of reliability if it wasn't done this
way.
Als...
How do I check which version of NumPy I'm using?
...t 13 2017, 12:02:49)
[GCC 7.2.0]
Platform: linux-x86_64
AMD/Intel CPU? True
VML available? False
Number of threads used by default: 8 (out of 48 detected cores)
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How can I repeat a character in Bash?
...l of the arguments, this simply prints "=" 100 times.
Using head (printf, etc) and tr:
head -c 100 < /dev/zero | tr '\0' '='
printf %100s | tr " " "="
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Why is lock(this) {…} bad?
...WCF objects, HttpContext.Current, Thread.Current, Singletons (in general), etc. The easiest way to avoid all of this? private [static] object myLock = new object();
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