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Mocking a class: Mock() or patch()?
.... Once you patch a class, references to the class are completely replaced by the mock instance.
mock.patch is usually used when you are testing something that creates a new instance of a class inside of the test. mock.Mock instances are clearer and are preferred. If your self.sut.something metho...
How to delete shared preferences data from App in Android
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To remove specific values: SharedPreferences.Editor.remove() followed by a commit()
To remove them all SharedPreferences.Editor.clear() followed by a commit()
If you don't care about the return value and you're using this from your application's main thread, consider using apply() instead.
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Logcat not displaying my log calls
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I've had the same problem using Android Studio and managed to get around by selecting No Filters in the select box in the top right corner of LogCat. By doing this I started receiving everything Android logs in the background into LogCat including my missing Log calls.
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Activity restart on rotation Android
...yboard visibility changes – and handle them within your Activity.
Start by adding the android:configChanges node to your Activity's manifest node
<activity android:name=".MyActivity"
android:configChanges="orientation|keyboardHidden"
android:label="@string/app_name">
or for ...
setTimeout or setInterval?
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drum machine by chromium project using setTimeout("schedule()", 0); So browser won't have unnecessary stack when it is background tab for chrome or lack of resources.
– Elliot Yap
Feb 23 '12 at 4:50
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Why would iterating over a List be faster than indexing through it?
...to the other implementation of List which is ArrayList, that one is backed by a simple array. In that case both of the above traversals are equivalent, since an array is contiguous so it allows random jumps to arbitrary positions.
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Is there a good reason I see VARCHAR(255) used so often (as opposed to another length)?
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@CharlesBretana: By "fake UTF-8" I mean MySQL's "utf8" encoding, which as I mentioned reserves (and is limited to) 3 bytes per character. This isn't a very good version of UTF-8; if you want decent UTF-8 in MySQL, you have to use its "utf8mb...
Retrieve only static fields declared in Java class
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I stumbled across this question by accident and felt it needed a Java 8 update using streams:
public static List<Field> getStatics(Class<?> clazz) {
List<Field> result;
result = Arrays.stream(clazz.getDeclaredFields())
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jQuery hide element while preserving its space in page layout
...u interact with the element, even though you can't see it! (As pointed out by DeadPassive.)
Usually that's not what you want. But perhaps occasionally you might?
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How to restart a rails server on Heroku?
...ith alias hra='heroku restart --app '
Which you can make a permanent alias by adding it to your .bashrc or .bash_aliases file as described at:
https://askubuntu.com/questions/17536/how-do-i-create-a-permanent-bash-alias and
Creating permanent executable aliases
Then you can just type hra app_name
Y...