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Creating and playing a sound in swift

So what I want to do is create and play a sound in swift that will play when I press a button, I know how to do it in Objective-C, but does anyone know how to in Swift? ...
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Clear variable in python

...ing a variable to null in PHP gives you similar behaviour in most cases as if you hadn't defined it in the first place. A value of None in Python is quite different from an undefined variable. None is quite like most other incarnations of null, however (until we get into more arcane details, at leas...
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SQL - Update multiple records in one query

...UES(a), b=VALUES(b), c=VALUES(c); This insert new values into table, but if primary key is duplicated (already inserted into table) that values you specify would be updated and same record would not be inserted second time. ...
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Detect permission of camera in iOS

... authStatus = [AVCaptureDevice authorizationStatusForMediaType:mediaType]; if(authStatus == AVAuthorizationStatusAuthorized) { // do your logic } else if(authStatus == AVAuthorizationStatusDenied){ // denied } else if(authStatus == AVAuthorizationStatusRestricted){ // restricted, normally won'...
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Efficiently test if a port is open on Linux?

...output connection exec 6<&- # close input connection To determine if someone is listening, attempt to connect by loopback. If it fails, then the port is closed or we aren't allowed access. Afterwards, close the connection. Modify this for your use case, such as sending an email, exiting t...
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Unit Testing: DateTime.Now

...e unit tests that expects the 'current time' to be different than DateTime.Now and I don't want to change the computer's time, obviously. ...
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Generate list of all possible permutations of a string

...= *b; *b = temp; } void print(char *a, int i, int n) { int j; if(i == n) { printf("%s\n", a); } else { for(j = i; j <= n; j++) { swap(a + i, a + j); print(a, i + 1, n); swap(a + i, a + j); } } } int main(void) { ...
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Link to reload current page

...n also use .. to refer to the folder above the current path, for instance, if you have this file structure: page1.html folder1 page2.html You can then in page2.html write: <a href="../page1.html">link to page 1</a> EDIT: I'm not sure if the behaviour has changed or if it was a...
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URLEncoder not able to translate space character

... This behaves as expected. The URLEncoder implements the HTML Specifications for how to encode URLs in HTML forms. From the javadocs: This class contains static methods for converting a String to the application/x-www-form-urlencoded MIME format. and from the HTML Specification...
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gdb split view with code

... thanks @user146043, this seems the only way if you are running screen at the same time as ctrl-a is the way to initiate screen commands! – olik79 May 29 '19 at 7:24 ...