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Dynamically generating a QR code with PHP [closed]
...s://chart.googleapis.com/chart?chs=300x300&cht=qr&chl=http%3A%2F%2Fwww.google.com%2F&choe=UTF-8
300x300 is the size of the QR image you want to generate,
the chl is the url-encoded string you want to change into a QR code, and
the choe is the (optional) encoding.
The link, above, gi...
Detect If Browser Tab Has Focus
...s, window.onfocus and window.onblur should work for your scenario:
http://www.thefutureoftheweb.com/blog/detect-browser-window-focus
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How to achieve code folding effects in Emacs?
...{{ and }}} as in folding mode, it uses where the block is defined.
http://www.gnu.org/software/emacs/manual/html_node/emacs/Outline-Mode.html
http://www.emacswiki.org/emacs/OutlineMinorMode
I am pretty sure that it comes with emacs. I then add this to my .emacs
;;======= Code folding =======
(add...
How to create an HTML button that acts like a link?
...
<button onclick="location.href='http://www.example.com'" type="button">
www.example.com</button>
Note that the type="button" attribute is important, since its missing value default is the Submit Button state.
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Detect if Android device has Internet connection
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HttpURLConnection urlc = (HttpURLConnection) (new URL("http://www.google.com").openConnection());
urlc.setRequestProperty("User-Agent", "Test");
urlc.setRequestProperty("Connection", "close");
urlc.setConnectTimeout(1500);
urlc.connect();...
Postgres - FATAL: database files are incompatible with server
... to check your DB and remove the old cluster.
Really Awesome.
see: http://www.postgresql.org/docs/9.2/static/pgupgrade.html to understand more.
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Font from origin has been blocked from loading by Cross-Origin Resource Sharing policy
... thing that has worked for me (probably because I had inconsistencies with www. usage):
Paste this in to your .htaccess file:
<IfModule mod_headers.c>
<FilesMatch "\.(eot|font.css|otf|ttc|ttf|woff)$">
Header set Access-Control-Allow-Origin "*"
</FilesMatch>
</IfModule>
...
Does Python SciPy need BLAS?
... Fortran libraries BLAS and LAPACK:
mkdir -p ~/src/
cd ~/src/
wget http://www.netlib.org/blas/blas.tgz
tar xzf blas.tgz
cd BLAS-*
## NOTE: The selected Fortran compiler must be consistent for BLAS, LAPACK, NumPy, and SciPy.
## For GNU compiler on 32-bit systems:
#g77 -O2 -fno-second-underscore -c ...
How do I force a DIV block to extend to the bottom of a page even if it has no content?
...mess around with it a bit.
This site has some excellent examples:
http://www.brunildo.org/test/html_body_0.html
http://www.brunildo.org/test/html_body_11b.html
http://www.brunildo.org/test/index.html
I also recommend going to http://quirksmode.org/
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How can one close HTML tags in Vim quickly?
...losetag.vim
Functions and mappings to close open HTML/XML tags
https://www.vim.org/scripts/script.php?script_id=13
I use something similar.
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