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NSNotificationCenter addObserver in Swift
...erit from an Objective-C object, you must prefix your method with @objc in order to use it as a selector.
@objc private func batteryLevelChanged(notification: NSNotification){
//do stuff using the userInfo property of the notification object
}
See NSNotificationCenter Class Reference, In...
Chrome Extension how to send data from content script to popup.html
...ution (although not very close to optimal):
In manifest.json: Change the order of the content scripts, putting jquery first. According to the relevant docs:
"js" [...] The list of JavaScript files to be injected into matching pages. These are injected in the order they appear in this array.
...
How to mark a build unstable in Jenkins when running shell scripts
...ute different tasks. Some are sh/bash scripts that run rsync, and some are PHP scripts. One of the PHP scripts is running some integration tests that output to JUnit XML, code coverage reports, and similar.
...
How to check if hex color is “too black”?
...
I found this WooCommerce Wordpress PHP function (wc_hex_is_light) and I converted to JavaScript. Works fine!
function wc_hex_is_light(color) {
const hex = color.replace('#', '');
const c_r = parseInt(hex.substr(0, 2), 16);
const c_g = parseInt(hex...
How to smooth a curve in the right way?
...om(100) * 0.2
yhat = savitzky_golay(y, 51, 3) # window size 51, polynomial order 3
plt.plot(x,y)
plt.plot(x,yhat, color='red')
plt.show()
UPDATE: It has come to my attention that the cookbook example I linked to has been taken down. Fortunately, the Savitzky-Golay filter has been incorporated i...
How to use NSJSONSerialization
I have a JSON string (from PHP's json_encode() that looks like this:
12 Answers
12
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Styling an input type=“file” button
...ut element. (The label's for attribute must match the file element's id in order for this to work).
<label for="file-upload" class="custom-file-upload">
Custom Upload
</label>
<input id="file-upload" type="file"/>
As an alternative, you could also just wrap the file input elem...
What is the preferred/idiomatic way to insert into a map?
...which will require an additional call to std::pair template constructor in order to convert to value_type (ie : adding const to first_type)
std::pair<int, int> will also require an additional call to the template constructor of std::pair in order to convert the parameter to value_type (ie : ad...
SQL Server: Filter output of sp_who2
....dbo.sysprocesses sp
JOIN master.dbo.sysdatabases sd ON sp.dbid = sd.dbid
ORDER BY spid
Now you can easily add any ORDER BY or WHERE clauses you like to get meaningful output.
Alternatively, you might consider using Activity Monitor in SSMS (Ctrl + Alt + A) as well
...
Is MVC a Design Pattern or Architectural pattern
...aBeans ( Model ), Servlet ( controller ). Same concept with all the famous php framework ( symphony, zend, cake etc. ). But nowaday frontend frameworks looks like back end application and modern javascript frameworks use mvc ( html your view, controller your script, and model your js objects as en...