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How can you do anything useful without mutable state?
I've been reading a lot of stuff about functional programming lately, and I can understand most of it, but the one thing I just can't wrap my head around is stateless coding. It seems to me that simplifying programming by removing mutable state is like "simplifying" a car by removing the dashboard:...
List comprehension vs. lambda + filter
I happened to find myself having a basic filtering need: I have a list and I have to filter it by an attribute of the items.
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“Inspect” a hover element?
...e read similar threads, but none quite my issue - I can right click on it fine, it just then disappears.
9 Answers
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Get User's Current Location / Coordinates
...location you need to declare:
let locationManager = CLLocationManager()
In viewDidLoad() you have to instantiate the CLLocationManager class, like so:
// Ask for Authorisation from the User.
self.locationManager.requestAlwaysAuthorization()
// For use in foreground
self.locationManager.request...
Execute code when Django starts ONCE only?
I'm writing a Django Middleware class that I want to execute only once at startup, to initialise some other arbritary code. I've followed the very nice solution posted by sdolan here , but the "Hello" message is output to the terminal twice . E.g.
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Why does Git treat this text file as a binary file?
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It simply means that when git inspects the actual content of the file (it doesn't know that any given extension is not a binary file - you can use the attributes file if you want to tell it explicitly - see the man pages).
Having inspected the file's con...
Cleaner way to update nested structures
Say I have got following two case class es:
7 Answers
7
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How do I rename a project in Xcode 5?
How do I rename a project in Xcode 5?
What steps do I need to take?
In the past this was always a very tricky manual process.
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How can I see normal print output created during pytest run?
Sometimes I want to just insert some print statements in my code, and see what gets printed out when I exercise it. My usual way to "exercise" it is with existing pytest tests. But when I run these, I don't seem able to see any standard output (at least from within PyCharm, my IDE).
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Broken references in Virtualenvs
I recently installed a bunch of dotfiles on my Mac along with some other applications (I changed to iTerm instead of Terminal, and Sublime as my default text editor) but ever since, all my virtual environments have stopped working, although their folders inside .virtualenvs are still there and they ...