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Get the latest record from mongodb collection
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I need a query with constant time response
By default, the indexes in MongoDB are B-Trees. Searching a B-Tree is a O(logN) operation, so even find({_id:...}) will not provide constant time, O(1) responses.
That stated, you can also sort by the _id if you are using ObjectId for you I...
How to attribute a single commit to multiple developers?
...Supported by GitHub and GitLab
Used by others: https://git.wiki.kernel.org/index.php/CommitMessageConventions
One problem with this approach is that you can't create a signed key for this group of devs, so you could essentially add anybody to this list even if they didn't work on a feature and GitH...
What is the difference between self::$bar and static::$bar in PHP?
...atic, you're invoking a feature called late static bindings (introduced in PHP 5.3).
In the above scenario, using self will result in Foo::$bar(1234).
And using static will result in Bar::$bar (4321) because with static, the interpreter takes takes into account the redeclaration within the Bar clas...
Check if URL has certain string with PHP
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worked for me with php
if(strpos($_SERVER['REQUEST_URI'], 'shop.php') !== false){
echo 'url contains shop';
}
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Get value of dynamically chosen class constant in PHP
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$id = constant("ThingIDs::$thing");
http://php.net/manual/en/function.constant.php
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How to output in CLI during execution of PHP Unit tests?
When running a PHPUnit test, I would like to be able to dump output so I can debug one or two things.
17 Answers
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How do I compute derivative using Numpy?
...mbolic Differentiation
Compute derivatives by hand.
Finite differences require no external tools but are prone to numerical error and, if you're in a multivariate situation, can take a while.
Symbolic differentiation is ideal if your problem is simple enough. Symbolic methods are getting quite r...
How do I remove the last comma from a string using PHP?
... I like this answer in particular, because one of the issues with a lot of PHP built-in functions, is that some of them are void, and some of them have return types. In this case, I was trying to just write rtrim($string, ','), when I should be writing $string = rtrim($string, ',');
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How to convert array values to lowercase in PHP?
How can I convert all values in an array to lowercase in PHP?
10 Answers
10
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How to get innerHTML of DOMNode?
What function do you use to get innerHTML of a given DOMNode in the PHP DOM implementation? Can someone give reliable solution?
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