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Difference between a Seq and a List in Scala
...
Where Array (and ArrayBuffer)? It is not kind of Iterable
– Peter Krauss
Oct 5 '19 at 15:38
add a comment
...
Why do people say that Ruby is slow? [closed]
...ch everything is a method lookup in Ruby - adding two numbers, indexing an array. Where other languages expose hacks (Python's __add__ method, Perl's overload.pm) Ruby does pure OO in all cases, and this can hurt performance if the compiler/interpreter is not clever enough.
If I were writing a popu...
static const vs #define
...cluded, create "constants" such as { 1, 2 } that can be used to initialise arrays, or #define MICROSECONDS *1E-6 etc. (definitely not recommending this!)
some special things like __FILE__ and __LINE__ can be incorporated into the macro substitution
you can test for existence and value in #if stateme...
What are the rules for the “…” token in the context of variadic templates?
...between x(args)... and y(args...) above!
You can use ... to initialize an array also as:
struct data_info
{
boost::any data;
std::size_t type_size;
};
std::vector<data_info> v{{args, sizeof(T)}...}; //pattern = {args, sizeof(T)}
which is expanded to this:
std::vector<data_info...
How to find what code is run by a button or element in Chrome using Developer Tools
...lement
The actual element where the event handler was registered in
events
Array with information about the jquery event handlers for the event type that we are interested in (e.g. click, change, etc)
handler
Actual event handler method that you can see by right clicking it and selecting Show f...
MySQL Great Circle Distance (Haversine formula)
...'lat']);
$lon_rad = deg2rad($user['lon']);
DB::replace('Coordinates', array(
'object_id' => $user['id'],
'object_type' => 0,
'sin_lat' => sin($lat_rad),
'cos_cos' => cos($lat_rad)*cos($lon_rad),
'cos_sin' => cos($lat_rad)*sin($lon_rad),
'lat' => $user['...
bower init - difference between amd, es6, globals and node
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The type of module defined in the main JavaScript file. Can be one or an array of the following strings:
globals: JavaScript module that adds to global namespace, using window.namespace or this.namespace syntax
amd: JavaScript module compatible with AMD, like RequireJS, using define() syntax
node...
What is @ModelAttribute in Spring MVC?
...ibute(“cities”)
public List<String> checkOptions(){
return new Arrays.asList(new[]{“Sofia”,”Pleven","Ruse”});//and so on
}
Purpose of such method is to add attribute in the model. So in our case cities key will have the list new Arras.asList(new[]{“Sofia”,”Pleven","Ruse...
How do I install Python OpenCV through Conda?
...opened, I wanted to confirm that I could extract a frame (frame 100) as an array. In openCV 2.4.9, the command for this was cap.set(cv2.cv.CV_CAP_PROP_POS_FRAMES, 100). In openCV 3.2.0, the equivalent command has changed to cap.set(cv2.CAP_PROP_POS_FRAMES, 100)
– ollerend
...
Why is 'false' used after this simple addEventListener function?
...actual node : "+this.nodeName );
}
}
/* The following array contains the elements between the target (span and you can
click also on the paragraph) and its ancestors up to the BODY element, it can still
go up to the "document" then the "window" element, for the sake of...