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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...ny other matrix math function relies on size, stride and continuous memory allocation.
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Exception.Message vs Exception.ToString()
...ingBuilder in this scenario may well be more expensive than two new string allocations, it's highly debatable it would be more efficient here. It's not like we're dealing with iterations. Horses for courses.
– Wim Hollebrandse
Feb 1 '10 at 13:28
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RESTful API methods; HEAD & OPTIONS
I'm writing a RESTful API module for an application in PHP, and I'm a bit mixed on the verbs HEAD and OPTIONS .
3 Answer...
MySQL - why not index every field?
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Indexing will take up more allocated space both from drive and ram, but also improving the performance a lot. Unfortunately when it reaches memory limit, the system will surrender the drive space and risk the performance. Practically, you shouldn't ind...
What is the AppDelegate for and how do I know when to use it?
...le or any type of analogy with another programming language like Python or PHP that uses an AppDelegate like pattern?
4 Ans...
How can I export tables to Excel from a webpage [closed]
...ge to process proper Excel files from your code. My solution of choice is PHPExcel It is the only one I've found so far that positively handles export with formatting to a MODERN version of Excel from any browser when you give it nothing but HTML. Let me clarify though, it's definitely not as eas...
How to encode URL parameters?
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With PHP
echo urlencode("http://www.image.com/?username=unknown&password=unknown");
Result
http%3A%2F%2Fwww.image.com%2F%3Fusername%3Dunknown%26password%3Dunknown
With Javascript:
var myUrl = "http://www.image.com/?user...
What is the difference between a mutable and immutable string in C#?
...y instance of StringBuilder :
var address = new StringBuilder(500);
It allocate memory chunk of size 500 bytes for this instance and all operation just modify this memory location and this memory not shared with any other object. And that is the reason why StringBuilder is MUTABLE.
I hope it wi...
Mixins vs. Traits
...s highly inconsistent and at least one of the points here is mostly wrong. PHP and Wikipedia (and according to @Sergio, also Scala) disagree with you about traits being stateless. I don't find this answer useful because it's made up of bare assertions, and it's unclear to me that this is anything mo...
Installing specific laravel version with composer create-project
...efer-dist laravel/laravel Projectname "6.*"
Run Local Development Server
php artisan serve
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