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Naming convention for utility classes in Java
...ed to name and address and the other contains utility functions related to orders, then call them CustomerNameAndAddressUtil and CustomerOrderUtil or some such. I regularly go nuts when I see meaningless subtle differences in names. Like just yesterday I was working on a program that had three field...
What is difference between XML Schema and DTD?
...w support for namespaces while DTD does not.
XML schemas define number and order of child elements, while DTD does not.
XML schemas can be manipulated on your own with XML DOM but it is not possible in case of DTD.
using XML schema user need not to learn a new language but working with DTD is diffic...
Number of visitors on a specific page
... (for which I have URL).
I don't find in Analytics where to enter a URL in order to look for statistics for this specific page.
...
How do I check if a string contains a specific word?
...g_match 1.5 seconds to finish and for strpos it took 0.5 seconds.
Edit:
In order to search any part of the string, not just word by word, I would recommend using a regular expression like
$a = 'How are you?';
$search = 'are y';
if(preg_match("/{$search}/i", $a)) {
echo 'true';
}
The i at the en...
What is the difference between concurrency, parallelism and asynchronous methods?
...lit up into units (units essentially being threads) that can be ran in any order and have a determinate outcome. Parallel means these units/threads are being ran literally at the same time on multiple processors.
– user7917402
Apr 26 '17 at 9:23
...
Get exit code of a background process
...ne
# Wait for all processes to finish, will take max 14s
# as it waits in order of launch, not order of finishing
for p in $pids; do
if wait $p; then
echo "Process $p success"
else
echo "Process $p fail"
fi
done
...
How to check if array is empty or does not exist? [duplicate]
... out that my original answer, more than anything else, addressed the wrong order of the conditions being evaluated in the question. In this sense, it fails to address several scenarios, such as null values, other types of objects with a length property, etc. It is also not very idiomatic JavaScript....
How to show “if” condition on a sequence diagram?
...ent. It would be lovely if ZenUML could draw that. It would be three calls ordered in time.
– Chef Gladiator
Jun 28 '19 at 8:43
...
Why malloc+memset is slower than calloc?
...The performance difference here is much larger (I measured more than three orders of magnitude on my system between malloc()+memset() and calloc()).
Party trick
Instead of looping 10 times, write a program that allocates memory until malloc() or calloc() returns NULL.
What happens if you add mems...
Why unsigned integer is not available in PostgreSQL?
...se PostgreSQL int4 or int8 respectively, just remembering that the natural order or arithmetic won't work reliably. But storing and retrieving is unaffected by that.
Here is how I can implement a simple unsigned int8:
First I will use
CREATE TYPE name (
INPUT = uint8_in,
OUTPUT = uint...