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Difference between Statement and PreparedStatement
...than disk operations which are an order of magnitude slower than in-memory CPU operations. Hence, any reduction in amount of data sent over the network will have a good effect on overall performance.
They protect against SQL injection, by escaping text for all the parameter values provided.
They pr...
Hidden Features of PHP? [closed]
...in the language core and are used all over the place which results in good CPU cache locality. Perl and Python both use separate language constructs for lists and maps resulting in more copying and potentially confusing transformations.
...
Download File Using Javascript/jQuery
...ry at least as large as the file being downloaded and/or other interesting CPU side effects.
fetch('https://jsonplaceholder.typicode.com/todos/1')
.then(resp => resp.blob())
.then(blob => {
const url = window.URL.createObjectURL(blob);
const a = document.createElement('a'...
Why are primes important in cryptography?
... @stujo: same principles will rule when all of us use Quantum CPUs, as primes can keep growing, its all about finding larger, impractical for quantum CPUs, the problem exists if some use regular CPUS to create keys, and some use Quantum CPUs to break those. The power of quantum CPUs, as...
Best way to check if object exists in Entity Framework?
...housands of database calls were being made to check for duplicates (so the CPU sent a lot of time at 100%). In the end I decided to keep the last 100,000 records cached in memory. This way I could check for duplicates against the cached records which was extremely fast when compared to a LINQ quer...
Java logical operator short-circuiting
... short-circuiting.
Note that this is more than an attempt at saving a few CPU cycles: in expressions like this
if (mystring != null && mystring.indexOf('+') > 0) {
...
}
short-circuiting means a difference between correct operation and a crash (in the case where mystring is null)....
Visual studio long compilation when replacing int with double
...ibrary routines to do the translation, while integer math can just use the CPU instructions. At the time the IEEE defined the standard, they made some choices that were very uncommon in implementation, and especially that long ago much more expensive to implement in microcode, and of course the curr...
Why is my program slow when looping over exactly 8192 elements?
...e div per pixel. Each loop using less local var than there are register in CPU. The other require 7 increments, 6 decrements, 1 div and between 10 to 20 mul for addressing depending on compiler optimization. Also each instruction in the loop require the result of the previous instruction, this disca...
How do I generate a random int number?
...GCryptoServiceProvider” class.
Random class takes seed values from your CPU clock which is very much predictable. So in other words RANDOM class of C# generates pseudo random numbers , below is the code for the same.
var random = new Random();
int randomnumber = random.Next()
While the RNGCrypt...
What is a deadlock?
...resource A and having a long process. Thread B waiting to lock resource A. CPU time usage : 20%, can you consider that a deadlock situation?
– rickyProgrammer
Sep 28 '17 at 16:37
2...