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Django REST framework: non-model serializer
...f __init__(self, *args, **kw):
# Initialize any variables you need from the input you get
pass
def do_work(self):
# Do some calculations here
# returns a tuple ((1,2,3, ), (4,5,6,))
result = ((1,2,3, ), (4,5,6,)) # final result
return result
The...
Remove blank lines with grep
I tried grep -v '^$' in Linux and that didn't work. This file came from a Windows file system.
14 Answers
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Can you explain the HttpURLConnection connection process?
...// instantiate OutputStreamWriter using the output stream, returned
// from getOutputStream, that writes to this connection.
// 2. This is the point where you'll know if the connection was
// successfully established. If an I/O error occurs while creating
// the output stream, you'll...
Rest with Express.js nested router
...s {mergeParams: true} to the child router if you want to access the params from the parent router.
mergeParams was introduced in Express 4.5.0 (Jul 5 2014)
In this example the itemRouter gets attached to the userRouter on the /:userId/items route
This will result in following possible routes:
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When should I use uuid.uuid1() vs. uuid.uuid4() in python?
I understand the differences between the two from the docs.
6 Answers
6
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Input from the keyboard in command line application
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The correct way to do this is to use readLine, from the Swift Standard Library.
Example:
let response = readLine()
Will give you an Optional value containing the entered text.
share
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What is the current directory in a batch file?
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From within your batch file:
%cd% refers to the current working directory (variable)
%~dp0 refers to the full path to the batch file's directory (static)
%~dpnx0 and %~f0 both refer to the full path to the batch directory an...
In Gradle, how do I declare common dependencies in a single place?
...cyManagement> section of the parent POM, and reference that dependency from child modules without specifying the version or scope or whatever.
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Why is there no tuple comprehension in Python?
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Thats a nice tip from Raymond Hettinger. I would still say there is a use case for using the tuple constructor with a generator, such as unpacking another structure, perhaps larger, into a smaller one by iterating over the attrs that you are...
Delete specified file from document directory
I want to delete an image from my app document directory. Code I have written to delete image is:
10 Answers
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