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Android - Back button in the title bar

In many apps (Calendar, Drive, Play Store) when you tap a button and enter a new activity, the icon in the title bar turns into a back button, but for the app I am making, it doesn't do that. How do I make that icon take you back to the previous screen? ...
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How do I choose grid and block dimensions for CUDA kernels?

... more than 8k/16k/32k/64k/32k/64k/32k/64k/32k/64k registers total (Compute 1.0,1.1/1.2,1.3/2.x-/3.0/3.2/3.5-5.2/5.3/6-6.1/6.2/7.0) Each block cannot consume more than 16kb/48kb/96kb of shared memory (Compute 1.x/2.x-6.2/7.0) If you stay within those limits, any kernel you can successfully compile w...
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What are the effects of exceptions on performance in Java?

...performances are not a concern... – Jean-Baptiste Yunès Aug 4 '17 at 15:45  |  show 4 more comments ...
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Maximum call stack size exceeded error

...lmost got deleted as spam (check history) – Jean-François Fabre♦ May 5 '19 at 9:37  |  show 1 more comment ...
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Send Email Intent

...p; a sample body" you will get just "I am" – Emre Koç Oct 19 '15 at 8:31 4 ShareCompat results ...
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Resumable downloads when using PHP to send the file?

...x bytes ahead and send the next y - x bytes. Also set the response to HTTP/1.0 206 Partial Content. Without having tested anything, this could work, more or less: $filesize = filesize($file); $offset = 0; $length = $filesize; if ( isset($_SERVER['HTTP_RANGE']) ) { // if the HTTP_RANGE header...
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How to get UTF-8 working in Java webapps?

...t the top of each xhtml page produced by the webapp: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fi"> <head> <m...
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Is PHP compiled or interpreted?

...ted Jul 15 '19 at 6:09 Jean-François Fabre♦ 122k1111 gold badges9797 silver badges156156 bronze badges answered Aug 19 '15 at 6:09 ...
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How to send email via Django?

...e easiest way for old projects < Django 1.4 – François Constant Sep 21 '15 at 1:16 add a comment  |  ...
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How to access full source of old commit in BitBucket?

...lick... some things are really amazing.... – Nuno Gonçalves Jun 27 '16 at 14:49 this step did not solved for me, what...