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Is it possible to GROUP BY multiple columns using MySQL?
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Preference of left to right is applied to the ascending order of the groupings and not the column group preference. GROUP BY applies col1+col2. e.g. col1 = 1, 2, 1, 2 | col2 = 1, 2, 3, 2 and running GROUP BY col1,col2 would return 1,1|1,3|2,2 as opposed to 1,1|2,2 as suggested. Wh...
What is the difference between a strongly typed language and a statically typed language?
...but it will never refer to an Integer or a List. That's static typing.
In PHP:
$s = "abcd"; // $s is a string
$s = 123; // $s is now an integer
$s = array(1, 2, 3); // $s is now an array
$s = new DOMDocument; // $s is an instance of the DOMDocument class
That's dynamic typi...
querySelector and querySelectorAll vs getElementsByClassName and getElementById in JavaScript
...Selector takes more time than getElementById, like here dimlucas.com/index.php/2016/09/17/… . What if we take access time into account? Does the live node obtained from getElementById take more time than the static one from querySelector?
– Eric
Nov 16 '17 at...
Solving “Who owns the Zebra” programmatically?
... It basically allows concluding of facts from statements made using First Order Logic. FOL is basically a more advanced form of propositional logic. If you decide you don't want to use Prolog, you could use a similar system of your own creation using a technique such as modus ponens to perform th...
No generic implementation of OrderedDictionary?
There doesn't appear to be a generic implementation of OrderedDictionary (which is in the System.Collections.Specialized namespace) in .NET 3.5. Is there one that I'm missing?
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git rebase without changing commit timestamps
...ch), I suppose you can organize your Git history with whatever commit date order you want/need, even set it to the future!.
As Olivier mentions in his question, the author date is never changed by a rebase;
From the Pro Git Book:
The author is the person who originally wrote the work,
whereas ...
Stop setInterval
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function updateDiv(){
$.ajax({
url: 'getContent.php',
success: function(data){
$('.square').html(data);
},
error: function(){
clearInterval(interval); // stop the interval
$.playSound('oneday.wav');
$(...
What is the difference between require and require-dev sections in composer.json?
... packages might be needed for developing the software, such as:
friendsofphp/php-cs-fixer (to detect and fix coding style issues)
squizlabs/php_codesniffer (to detect and fix coding style issues)
phpunit/phpunit (to drive the development using tests)
etc.
Deployment
Now, in development and test...
How big can a user agent string get?
...ents get so tweaked by the items a user has installed, and in a particular order, that they are almost personally identifiable (one other answer has a good example of this happening). In fact, the EFF did a study (pdf) about it.
– patridge
Mar 8 '11 at 20:29
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How do I get indices of N maximum values in a NumPy array?
...copy of an array from unconstrained min to unconstrained max in a reversed order)
– FizBack
Oct 19 '16 at 13:51
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