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Programmatically saving image to Django ImageField
...s an image off the web and stores it in a model. The important bits are:
from django.core.files import File # you need this somewhere
import urllib
# The following actually resides in a method of my model
result = urllib.urlretrieve(image_url) # image_url is a URL to an image
# self.photo is ...
Android Emulator: Installation error: INSTALL_FAILED_VERSION_DOWNGRADE
...ionCode (integer value for your version number).
You might have installed from a separate copy of the code where the version number was higher than the copy you're working with right now. In either case, either:
uninstall the currently installed copy
or open up your phone's Settings > Applica...
Disable ActiveRecord for Rails 4
...ew my_app -O
For existing applications:
1. Remove database adapter gems from your Gemfile (mysql2, sqlite3, etc.)
2. Change your config/application.rb
Remove require 'rails/all line and require frameworks (among those available in your rails version, the list varies, do not just copy) you want ...
Set theme for a Fragment
...container, Bundle savedInstanceState) {
// create ContextThemeWrapper from the original Activity Context with the custom theme
final Context contextThemeWrapper = new ContextThemeWrapper(getActivity(), R.style.yourCustomTheme);
// clone the inflater using the ContextThemeWrapper
La...
Pick a random value from an enum?
...d answer and that left me with boilerplate code when I needed to randomize from my second Enum. Also, it's easy to forget about SecureRandom sometimes. Thanks.
– Siamaster
Jul 30 '18 at 10:43
...
How do you get a directory listing sorted by creation date in python?
...te: to sort dirpath's entries by modification date in Python 3:
import os
from pathlib import Path
paths = sorted(Path(dirpath).iterdir(), key=os.path.getmtime)
(put @Pygirl's answer here for greater visibility)
If you already have a list of filenames files, then to sort it inplace by creation ...
Getting rid of bullet points from
...
To remove bullet points from unordered lists , you can use:
list-style: none;
You can also use:
list-style-type: none;
Either works but the first is a shorter way to get the same result.
...
Return from lambda forEach() in java
...
The return there is returning from the lambda expression rather than from the containing method. Instead of forEach you need to filter the stream:
players.stream().filter(player -> player.getName().contains(name))
.findFirst().orElse(null);
...
What is the difference between atan and atan2 in C++?
...ng the arctangent of all four quadrants. std::atan only allows calculating from quadrants 1 and 4.
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New Array from Index Range Swift
How can I do something like this? Take the first n elements from an array:
5 Answers
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