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When should I use @classmethod and when def method(self)?
...fine functions in classes. The author seems to use them both very intentionally. The first one is one I myself use a lot:
3...
What's the difference between integer class and numeric class in R
...for double precision floating point numbers) and integer. R will automatically convert between the numeric classes when needed, so for the most part it does not matter to the casual user whether the number 3 is currently stored as an integer or as a double. Most math is done using double precision...
Java 8 forEach with index [duplicate]
... way to build a forEach method in Java 8 that iterates with an index? Ideally I'd like something like this:
3 Answers
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What is the best practice for making an AJAX call in Angular.js?
....X. To prevent confusion it's being changed to reflect the best answer for ALL current versions of Angular as of today, 2013-12-05.
The idea is to create a service that returns a promise to the returned data, then call that in your controller and handle the promise there to populate your $scope prop...
How to stop flask application without using ctrl-c
...ore at Shutdown The Simple Server):
from flask import request
def shutdown_server():
func = request.environ.get('werkzeug.server.shutdown')
if func is None:
raise RuntimeError('Not running with the Werkzeug Server')
func()
@app.route('/shutdown', methods=['POST'])
def shutdown(...
Remove last character from string. Swift language
...answered Jul 24 '14 at 11:28
gui_dosgui_dos
1,19377 silver badges55 bronze badges
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numpy: most efficient frequency counts for unique values in an array
....org/doc/numpy/reference/generated/numpy.bincount.html
import numpy as np
x = np.array([1,1,1,2,2,2,5,25,1,1])
y = np.bincount(x)
ii = np.nonzero(y)[0]
And then:
zip(ii,y[ii])
# [(1, 5), (2, 3), (5, 1), (25, 1)]
or:
np.vstack((ii,y[ii])).T
# array([[ 1, 5],
[ 2, 3],
[ 5, ...
append new row to old csv file python
I am trying to add a new row to my old csv file. Basically, it gets updated each time I run the Python script.
7 Answers
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Why can't code inside unit tests find bundle resources?
... main bundle. I have the following a problem. I am loading a png file. Normally this file is not in the main bundle due the user downloads it from a server. But for a test I want to use a file from the test bundle without copying it into the main bundle.
– Chris
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How to convert a string of bytes into an int?
... use the struct module to do this:
>>> struct.unpack("<L", "y\xcc\xa6\xbb")[0]
3148270713L
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