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Is there a standard for storing normalized phone numbers in a database?
...L, and simply line numbers in the rural areas (AAA) LLLL. You will have to start at the top in a tree of some form, and format them as you have information. For example, country code 0 has a known format for the rest of the number, but for country code 5432 you might need to examine the area code b...
The data-toggle attributes in Twitter Bootstrap
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Any attribute that starts with data- is the prefix for custom attributes used for some specific purpose (that purpose depends on the application). It was added as a semantic remedy to people's heavy use of rel and other attributes for purposes ...
++someVariable vs. someVariable++ in JavaScript
... @JeanJimenez: Well it produces the result I expect. For example, if x starts off as 10, the value of r1 is 21, which is 10+11. The value of the first x++ expression is 10 and x is incremented to 11. The value of the second x++ expression is 11 and x is incremented to 12.
–...
How are people unit testing with Entity Framework 6, should you bother?
I am just starting out with Unit testings and TDD in general. I have dabbled before but now I am determined to add it to my workflow and write better software.
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How is the Linux kernel tested ?
...giU
Step debuggers
Not really unit testing, but may help once your tests start failing:
QEMU + GDB: https://stackoverflow.com/a/42316607/895245
KGDB: https://stackoverflow.com/a/44226360/895245
My own QEMU + Buildroot + Python setup
I also started a setup focused on ease of development, but I...
node.js fs.readdir recursive directory search
...of the loop completes in order. In a parallel loop, all the iterations are started at the same time, and one may complete before another, however, it is much faster than a serial loop. So in this case, it's probably better to use a parallel loop because it doesn't matter what order the walk complete...
What is token-based authentication?
...ith a single way of authenticating those
calls.
Mobile ready: when you start working on a native platform (iOS, Android, Windows 8, etc.) cookies are not ideal when consuming a
token-based approach simplifies this a lot.
CSRF: since you are not relying on cookies, you don't need to prote...
select count(*) from table of mysql in php
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Please start using PDO.
mysql_* is deprecated as of PHP 5.5.0 and will be removed entirely in 7. Let's make it easier to upgrade and start using it now.
$dbh = new \PDO($dsn, $user, $password);
$sth = $dbh->prepare('SELECT co...
How to get the number of days of difference between two dates on mysql?
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SELECT md.*, DATEDIFF(md.end_date, md.start_date) AS days FROM membership_dates md
output::
id entity_id start_date end_date days
1 1236 2018-01-16 00:00:00 2018-08-31 00:00:00 227
2 2876 2015-06-26 00:00:00 ...
What columns generally make good indexes?
...hen that's bad index.
Likely in any book, "Index Page" could have chapter start page, topic page number starts, also sub topic page starts. Some clarification in Index page helps but more detailed index might confuse you or scare you. Indexes are also having memory.
Index selection should be wise...