For example, you want to set 40% alpha transparence to #000000
(black color), you need to add 66
like this #66000000
.
Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.
$ python -m SimpleHTTPServer 8000
Look at the following image...
...it shows an object being tested.
You can't see inside the object. All you can do is send it messages. This is an important point to make because we should be "testing the interface, and NOT the implementation" - doing so will allow us to change the implementation without causing our tests to break.
A personal diary of DataFrame munging over the years.
Convert Series datatype to numeric (will error if column has non-numeric values)
(h/t @makmanalp)
http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query | |
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails | |
#payload: [{"kind"=>"person"}] | |
Segment.where("payload @> ?", [{kind: "person"}].to_json) | |
#data: {"interest"=>["music", "movies", "programming"]} | |
Segment.where("data @> ?", {"interest": ["music", "movies", "programming"]}.to_json) | |
Segment.where("data #>> '{interest, 1}' = 'movies' ") | |
Segment.where("jsonb_array_length(data->'interest') > 1") |
In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:
http://techcrunch.com/2007/08/11/facebook-source-code-leaked/
It became a big deal:
http://www.techmeme.com/070812/p1#a070812p1
The two files are index.php (the homepage) and search.php (the search page)
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