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Returning value that was passed into a method
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You can use a lambda with an input parameter, like so:
.Returns((string myval) => { return myval; });
Or slightly more readable:
.Returns<string>(x => x);
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Undo scaffolding in Rails
...:
rails generate scaffold MyFoo
(or similar), and you can destroy/undo it using
rails destroy scaffold MyFoo
That will delete all the files created by generate, but not any additional changes you may have made manually.
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Correct way to define Python source code encoding
...put pretty much anything before the "coding" part, but stick to "coding" (with no prefix) if you want to be 100% python-docs-recommendation-compatible.
More specifically, you need to use whatever is recognized by Python and the specific editing software you use (if it needs/accepts anything at all)...
Java Hashmap: How to get key from value?
...ibrary instead of the standard Java Collections API, you can achieve this with ease.
The BidiMap interface in the Collections library is a bi-directional map, allowing you to map a key to a value (like normal maps), and also to map a value to a key, thus allowing you to perform lookups in both dire...
Django using get_user_model vs settings.AUTH_USER_MODEL
...cannot guarantee that the User model is already loaded into the app cache. It might work in your specific setup, but it is a hit-and-miss scenario. If you change some settings (e.g. the order of INSTALLED_APPS) it might very well break the import and you will have to spend additional time debugging....
How to list only top level directories in Python?
...de some folder.
This means I don't want filenames listed, nor do I want additional sub-folders.
18 Answers
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How to test valid UUID/GUID?
...follow
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edited Sep 23 '19 at 10:59
Soroush Chehresa
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Calculate distance between 2 GPS coordinates
How do I calculate distance between two GPS coordinates (using latitude and longitude)?
29 Answers
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Resize fields in Django Admin
Django tends to fill up horizontal space when adding or editing entries on the admin, but, in some cases, is a real waste of space, when, i.e., editing a date field, 8 characters wide, or a CharField, also 6 or 8 chars wide, and then the edit box goes up to 15 or 20 chars.
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How do you display a Toast from a background thread on Android?
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You can do it by calling an Activity's runOnUiThread method from your thread:
activity.runOnUiThread(new Runnable() {
public void run() {
Toast.makeText(activity, "Hello", Toast.LENGTH_SHORT).show();
}
});
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