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Using property() on classmethods
...lf - to
extend its __get__ method, or you can
define a descriptor type from scratch
by creating a new-style class that
defines __get__, __set__ and
__delete__ methods.
NOTE: The below method doesn't actually work for setters, only getters.
Therefore, I believe the prescribed solution is...
What does it mean to hydrate an object?
...omain data ("real" data), and then populating it with domain data (such as from a database, from the network, or from a file system).
From Erick Robertson's comments on this answer:
deserialization == instantiation + hydration
If you don't need to worry about blistering performance, and you a...
Getting a list of associative array keys
...re just using keys.push(key);. You're just pulling (and thus declaring it) from the global namespace. :)
– b00t
Mar 11 '16 at 11:58
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open read and close a file in 1 line of code
...p", "copyright", "credits" or "license" for more information.
>>> from pathlib import Path
>>> (Path("/etc") / "hostname").read_text()
'dev1.example\n'
On Python 27 install backported pathlib or pathlib2
...
Why would a static nested interface be used in Java?
...t code which cannot access Foo will not be able to access Foo.Bar either. (From source code - bytecode or reflection can access Foo.Bar even if Foo is package-private!)
It is acceptable style to create a nested interface this way if you expect it to be used only from the outer class, so that you do...
demystify Flask app.secret_key
...or prepend) the SECRET_KEY to the cookie byte string, then generate a hash from that combination.
# encode and salt the cookie, then hash the result
>>> cookie_bytes = str(cookie).encode('utf8')
>>> signature = sha1(cookie_bytes+SECRET_KEY).hexdigest()
>>> print(signature...
What are the differences between json and simplejson Python modules?
...have seen many projects using simplejson module instead of json module from the Standard Library. Also, there are many different simplejson modules. Why would use these alternatives, instead of the one in the Standard Library?
...
How do I revert a Git repository to a previous commit?
How do I revert from my current state to a snapshot made on a certain commit?
41 Answers
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Reduce, fold or scan (Left/Right)?
...ction of intermediate cumulative results using a start value.
Accumulate
From LEFT and forwards...
With a collection of elements abc and a binary operator add we can explore what the different fold functions do when going forwards from the LEFT element of the collection (from A to C):
val abc = ...
Joda-Time: what's the difference between Period, Interval and Duration?
...cking the appropriate one for the job rather than of relative performance. From the documentation with comments added by me in italics:
An interval in Joda-Time represents an interval of time from one millisecond instant to another instant. Both instants are fully specified instants in the dateti...