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Is there a way to detect if an image is blurry?
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Yes, it is. Compute the Fast Fourier Transform and analyse the result. The Fourier transform tells you which frequencies are present in the image. If there is a low amount of high frequencies, then the image is blurry.
Defining t...
Meaning of numbers in “col-md-4”,“ col-xs-1”, “col-lg-2” in Bootstrap
I am confused with the grid system in the new Bootstrap, particularly these classes:
5 Answers
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MySQL root password change
...tables, updated the root password, and checked the user table to make sure it is there. Once restarting the mysql daemon I tried logging in with the new root password that I just set and still get Access denied for user 'root' errors. I have also tried completely removing and reinstalling mysql (i...
How To Change DataType of a DataColumn in a DataTable?
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You cannot change the DataType after the Datatable is filled with data. However, you can clone the Data table, change the column type and load data from previous data table to the cloned table as shown below.
DataTable dtCloned = dt.Clone();
dtCloned.Columns[0].DataType = typeof(Int32)...
Bash, no-arguments warning, and case decisions
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if [[ $# -eq 0 ]] ; then
echo 'some message'
exit 0
fi
case "$1" in
1) echo 'you gave 1' ;;
*) echo 'you gave something else' ;;
esac
The Advanced Bash-Scripting Guide is pretty good. In spite of its name, it does treat the basics.
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Maven: Command to update repository after adding dependency to POM
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Thanks, I also discovered that adding it to the pom in STS will automatically download it for you.
– JJ180
Dec 19 '11 at 17:35
15
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Find the number of columns in a table
It is possible to find the number of rows in a table:
19 Answers
19
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What's the point of 'meta viewport user-scalable=no' in the Google Maps API
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On many devices (such as the iPhone), it prevents the user from using the browser's zoom. If you have a map and the browser does the zooming, then the user will see a big ol' pixelated image with huge pixelated labels. The idea is that the user should use the z...
How to get a substring between two strings in PHP?
...not want to think about regex (well, I could do one but really don't think it's the best way to go). Thinking of strpos and substr functions.
Here's an example:
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Download file from an ASP.NET Web API method using AngularJS
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Support for downloading binary files in using ajax is not great, it is very much still under development as working drafts.
Simple download method:
You can have the browser download the requested file simply by using the code below, and this is supported in all browsers, and will obviou...