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what exactly is device pixel ratio?
...solution is double the logical linear resolution.
Physical resolution: 960 x 640
Logical resolution: 480 x 320
The formula is:
Where:
is the physical linear resolution
and:
is the logical linear resolution
Other devices report different device pixel ratios, including non-integer ones. ...
What do I use for a max-heap implementation in Python?
... way is to invert the value of the keys and use heapq. For example, turn 1000.0 into -1000.0 and 5.0 into -5.0.
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Rspec doesn't see my model Class. uninitialized constant error
...
Erik Escobedo
2,6152020 silver badges4040 bronze badges
answered Jul 7 '13 at 1:53
gmacdougallgmacdougall
...
Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
... // original array won't be modified)
let results = [];
for (let i = 0; i < sorted_arr.length - 1; i++) {
if (sorted_arr[i + 1] == sorted_arr[i]) {
results.push(sorted_arr[i]);
}
}
return results;
}
let duplicatedArray = [9, 9, 111, 2, 3, 4, 4, 5, 7];
console.log...
serve current directory from command line
...
204
Simplest way possible (thanks Aaron Patterson/n0kada):
ruby -run -e httpd . -p 9090
Alternat...
Jquery UI tooltip does not support html content
...with jQuery 1.9.1. And I started to use jQueryUI tooltip with jquery.ui.1.10.2. Everything was good. But when I used HTML tags in the content (in the title attribute of the element I was applying the tooltip to), I noticed that HTML is not supported.
...
How do I resolve “HTTP Error 500.19 - Internal Server Error” on IIS7.0 [closed]
...
answered May 30 '09 at 7:09
BruceBruce
7,19055 gold badges3434 silver badges4949 bronze badges
...
Allow user to select camera or gallery for image
...;ResolveInfo> listCam = packageManager.queryIntentActivities(camIntent, 0);
for (ResolveInfo res : listCam) {
final Intent finalIntent = new Intent(camIntent);
finalIntent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
yourIntentsList.add(finalIn...
How do I convert a string to a number in PHP?
I want to convert these types of values, '3' , '2.34' , '0.234343' , etc. to a number. In JavaScript we can use Number() , but is there any similar method available in PHP?
...
Why isn't String.Empty a constant?
...ed by Microsoft here in the Shared Source Common Language Infrastructure 2.0 Release. The file to look at is sscli20\clr\src\bcl\system\string.cs.
The Empty constant holds the empty
string value. We need to call the
String constructor so that the
compiler doesn't mark this as a
literal.
...