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MySQL: how to get the difference between two timestamps in seconds
...and the TIME_TO_SEC() functions as follows:
SELECT TIME_TO_SEC(TIMEDIFF('2010-08-20 12:01:00', '2010-08-20 12:00:00')) diff;
+------+
| diff |
+------+
| 60 |
+------+
1 row in set (0.00 sec)
You could also use the UNIX_TIMESTAMP() function as @Amber suggested in an other answer:
SELECT UNIX_T...
Show a PDF files in users browser via PHP/Perl
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answered Jan 13 '11 at 12:04
StephenStephen
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How to write iOS app purely in C
...c_msgSend(self->window, sel_getUid("initWithFrame:"), (struct CGRect) { 0, 0, 320, 480 });
// here, we are creating our view controller, and our view. note the use of objc_getClass, because we cannot reference UIViewController directly in C.
id viewController = objc_msgSend(objc_msgSend(...
Extracting substrings in Go
... Denys SéguretDenys Séguret
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11
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Is it possible to disable floating headers in UITableView with UITableViewStylePlain?
... |
edited Dec 8 '16 at 21:05
shim
6,41999 gold badges5656 silver badges9292 bronze badges
answered Jul 2...
Turn off iPhone/Safari input element rounding
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670
On iOS 5 and later:
input {
border-radius: 0;
}
input[type="search"] {
-webkit-appearanc...
Different results with Java's digest versus external utilities
...file. I am using Windows 7 Professional with SP1 . I have tried Java 6.0.29 and Java 7.0.03 . Can someone tell me why I am getting different hash values from Java versus (many!) external utilities and/or websites? Everything external matches with each other, only Java is returning different ...
Python Flask Intentional Empty Response
... HTTP server must return something. The HTTP 'empty response' response is 204 No Content:
return ('', 204)
Note that returning a file to the browser is not an empty response, just different from a HTML response.
share
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How can I extract a good quality JPEG image from a video file with ffmpeg?
...2).
To output a series of images:
ffmpeg -i input.mp4 -qscale:v 2 output_%03d.jpg
See the image muxer documentation for more options involving image outputs.
To output a single image at ~60 seconds duration:
ffmpeg -ss 60 -i input.mp4 -qscale:v 4 -frames:v 1 output.jpg
This will work with any vid...
Replace one character with another in Bash
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405
Use inline shell string replacement. Example:
foo=" "
# replace first blank only
bar=${foo/ ...