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Why does “,,,” == Array(4) in Javascript?
...d if you follow the ToPrimitive method you will eventually find that it it calls toString.
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Rails 3 check if attribute changed
...ry & other ary method). The result of the intersection is an array. By calling any? on the array, I get true if there is at least one intersection.
Also very useful, the changed_attributes method returns a hash of the attributes with their original values and the changes returns a hash of the a...
How to stop mysqld
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There is an alternative way of just killing the daemon process by calling
kill -TERM PID
where PID is the value stored in the file mysqld.pid or the mysqld process id which can be obtained by issuing the command ps -a | grep mysqld.
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PEP 8, why no spaces around '=' in keyword argument or a default parameter value?
...erence is already clear from context. The former happens within a function call, and the latter needs to stand alone at the current indentation level. IMO, for variable names longer than 5-6 characters (i.e. real life for most), the variant with spaces is hands-down more readable.
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How can I do string interpolation in JavaScript?
...a think that's specific to your keyboard layout; what you're describing is called "dead keys". They're present in the Norwegian keyboard layout (where I am from) as well, which is part of the reason I switch to a US keyboard layout for all programming. (There's a number of other characters - e.g. ...
Write string to output stream
...a Writer, (often a PrintWriter), that does the conversion for you when you call its write(String) (or print(String)) method. The corresponding wrapper for InputStreams is a Reader.
PrintStream is a special OutputStream implementation in the sense that it also contain methods that automatically enco...
What does %5B and %5D in POST requests stand for?
...12%5D' encodes foo [12]:
%20 is space
%5B is '['
and %5D is ']'
This is called percent encoding and is used in encoding special characters in the url parameter values.
EDIT By the way as I was reading https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/encodeURI#Descript...
How to check if a user is logged in (how to properly use user.is_authenticated)?
... 2.0.
For Django 1.9 and older:
is_authenticated is a function. You should call it like
if request.user.is_authenticated():
# do something if the user is authenticated
As Peter Rowell pointed out, what may be tripping you up is that in the default Django template language, you don't tack on par...
Get class name of django model
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If you want something more implicit than a call to string, then you can get the same (tried on Django 1.11) with: Book._meta.object_name or Book._meta.model_name. Then if you want the app name as well, that's accessible via Book._meta.app_label
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How can I wait till the Parallel.ForEach completes
...el.Foreach() will wait until all its branched tasks are complete. From the calling thread you can treat it as a single synchronous statement and for instance wrap it inside a try/catch.
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