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How do I make a simple makefile for gcc on Linux?
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edited Nov 27 '10 at 2:14
answered Sep 28 '09 at 0:12
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Extracting substrings in Go
... Denys SéguretDenys Séguret
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11
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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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Insert string at specified position
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+50
$newstr = substr_replace($oldstr, $str_to_insert, $pos, 0);
http://php.net/substr_replace
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Show a number to two decimal places
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return number_format((float)$number, 2, '.', '');
Example:
$foo = "105";
echo number_format((float)$foo, 2, '.', ''); // Outputs -> 105.00
This function returns a string.
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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 ...
Drop multiple tables in one shot in mysql
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Leniel MaccaferriLeniel Maccaferri
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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/ ...
How can I extract a good quality JPEG image from a video file with ffmpeg?
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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...
How to make execution pause, sleep, wait for X seconds in R?
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}
testit(3.7)
Yielding
> testit(3.7)
user system elapsed
0.000 0.000 3.704
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