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What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
...ing/testing I've done with these libs. Oh and I stole some of the positive description from Reed.
I'll mention up top that I went with GMTL despite it's idiosyncrasies because the Eigen2 unsafeness was too big of a downside. But I've recently learned that the next release of Eigen2 will contain def...
eval command in Bash and its typical uses
... code, to arrive at the final value executed by eval. (the following lines descriptive, not exact bash code):
1. eval varval="\$" + "$varname" # This substitution resolved in eval statement
2. .................. "$myvarname_a" # $myvarname_a previously resolved by for-loop
3. ...................
How to send a JSON object using html form data
...bject, using only html, there's a way. In some server side frameworks like PHP you can write the follow code:
<form action="myurl" method="POST" name="myForm">
<p><label for="first_name">First Name:</label>
<input type="text" name="name[first]" id="fname"&...
What is a lambda expression in C++11?
...
Big Thanks, fixed it in description and also ac
In what situations would AJAX long/short polling be preferred over HTML5 WebSockets?
...e point in the middle (like with AJAX or Long Polling with a language like PHP).
You can store data in RAM, or even republish between sockets straight away.
Security considerations
People are often concerned about the security of WebSockets. The reality is that it makes little difference or even p...
What is the 'dynamic' type in C# 4.0 used for?
...rongly typed language": Eric Lippert is not a fan of "strongly typed" as a description.
– Andrew Keeton
Aug 21 '19 at 18:59
...
What is the difference between “INNER JOIN” and “OUTER JOIN”?
...ay find more efficient ways of executing the query than the purely logical description above but the final result must be the same)
I'll start off with an animated version of a full outer join. Further explanation follows.
Explanation
Source Tables
First start with a CROSS JOIN (AKA Cartesian Pro...
Regular expression for first and last name
...
In my case, that variable is $name.
I used the following code for my PHP:
if (preg_match('/\b([A-Z]{1}[a-z]{1,30}[- ]{0,1}|[A-Z]{1}[- \']{1}[A-Z]{0,1}
[a-z]{1,30}[- ]{0,1}|[a-z]{1,2}[ -\']{1}[A-Z]{1}[a-z]{1,30}){2,5}/', $name)
# there is no space line break between in the abov...
Remote debugging with Android emulator
...4 connectaddress=<emulatorIP>
source:http://www.sarpex.co.uk/index.php/2016/10/02/connect-genymotion-emulator-remotely/
Disclaimer, I'm the author.
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Get Base64 encode file-data from Input Form
...hat support it (Chrome, Firefox and the as-yet unreleased Safari 6), and a PHP script that echos back POSTed file data as Base64-encoded data for the other browsers.
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