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How to remove a key from a Python dictionary?
...whether it is in the dictionary, use the two-argument form of dict.pop():
my_dict.pop('key', None)
This will return my_dict[key] if key exists in the dictionary, and None otherwise. If the second parameter is not specified (ie. my_dict.pop('key')) and key does not exist, a KeyError is raised.
To...
CocoaPods Errors on Project Build
...
I had a similar problem when I did major changes to my Podfile. My solution was to remove the workspace file and run pod install again:
rm -rf MyProject.xcworkspace
pod install
share
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How to get commit history for just one branch?
Let's say I created a new branch my_experiment from master and made several commits to my_experiment . If I do a git log when on my_experiment , I see the commits made to this branch, but also the commits made to master before the my_experiments branch was created.
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“unrecognized selector sent to instance” error in Objective-C
...ith ARC. I had the same error "unrecognized selector sent to instance". In my case I had a UIButton's target action set up to pass itself as the sender parameter, but later realised I didn't need it and removed that in code. So, something like:
- (IBAction)buttonPressed:(UIButton *)sender {
Was c...
AngularJS error: 'argument 'FirstCtrl' is not a function, got undefined'
...troller like an ng component, not as a simple function:
<div ng-app="myAppName">
<!-- or what's the root node of your angular app -->
and the js part:
angular.module('myAppName', [])
.controller('FirstCtrl', function($scope) {
$scope.data = {message: 'Hello'};
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Change Volley timeout duration
I use the new Volley framework for Android to do a request to my server. But it timeouts before getting the response, although it does respond.
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Controlling maven final name of jar artifact
...t;2.3.2</version>
<configuration>
<finalName>myJar</finalName>
</configuration>
</plugin>
As indicated in the official documentation.
Update:
For Maven >= 3
Based on Matthew's comment you can now do it like this:
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Missing Maven dependencies in Eclipse project
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Well, I tried everything posted here, unfortunately nothings works in my case. So, trying different combinations I came out with this one that solved my problem.
1) Open the .classpath file at the root of your eclipse's project.
2) Insert the following entry to the file:
<classpathentry k...
Lost my schema.rb! Can it be regenerated?
...hema.rb in git. Somehow I have stuffed this up and somewhere along the way my schema.rb file has disappeared.
7 Answers
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How do I create a constant in Python?
...typing.Final variable annotation that will tell static type checkers (like mypy) that your variable shouldn't be reassigned. This is the closest equivalent to Java's final. However, it does not actually prevent reassignment:
from typing import Final
a: Final = 1
# Executes fine, but mypy will repo...