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Creating a JSON response using Django and Python
...JSON content.
import json
from django.http import HttpResponse
response_data = {}
response_data['result'] = 'error'
response_data['message'] = 'Some error message'
Pre-Django 1.7 you'd return it like this:
return HttpResponse(json.dumps(response_data), content_type="application/json")
For D...
How to run test methods in specific order in JUnit4?
...e is a clean way to do this with JUnit, to my knowledge JUnit assumes that all tests can be performed in an arbitrary order. From the FAQ:
How do I use a test fixture?
(...) The ordering of test-method invocations is not guaranteed, so testOneItemCollection() might be executed before testEm...
Reading binary file and looping over each byte
...hile byte != "":
# Do stuff with byte.
byte = f.read(1)
finally:
f.close()
Python 2.5-2.7
with open("myfile", "rb") as f:
byte = f.read(1)
while byte != "":
# Do stuff with byte.
byte = f.read(1)
Note that the with statement is not available in versio...
Find intersection of two nested lists?
... 3 filter returns an iterable instead of list, so you need to wrap filter calls with list():
c3 = [list(filter(lambda x: x in c1, sublist)) for sublist in c2]
Explanation:
The filter part takes each sublist's item and checks to see if it is in the source list c1.
The list comprehension is exec...
Create request with POST, which response codes 200 or 201 and content
...you should include in the response body:
The 201 response payload typically describes and links to the resource(s) created.
For the human using the browser, you give them something they can look at, and click, to get to their newly created resource:
HTTP/1.1 201 Created
Date: Sat, 02 Apr 2016...
Should IBOutlets be strong or weak under ARC?
...t practice from Apple is for IBOutlets to be strong unless weak is specifically needed to avoid a retain cycle. As Johannes mentioned above, this was commented on in the "Implementing UI Designs in Interface Builder" session from WWDC 2015 where an Apple Engineer said:
And the last option I want...
How can I pair socks from a pile efficiently?
... enough (and faster).
For each color of socks, form a pile. Iterate over all socks in your input basket and distribute them onto the color piles.
Iterate over each pile and distribute it by some other metric (e.g. pattern) into the second set of piles
Recursively apply this scheme until you have d...
getenv() vs. $_ENV in PHP
What is the difference between getenv() and $_ENV ?
6 Answers
6
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Getting a list of associative array keys
...nymore (for which a polyfill is available developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…)
– Simon_Weaver
Dec 11 '17 at 1:55
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Creating a new empty branch for a new project
...branches departing from the original branch. But now we want to create a small new project to track some documentation. For that we would want to create a new empty branch to start storing our files, and I would want other users of the network to clone that branch.
...