Why is a Redux reducer called a reducer?
Whilst learning Redux I've come across reducers. The documentation states: The reducer is a pure function that takes the previous state and an action, and returns the next state. (previousState, action) => newState. It's called a reducer because it's the type of function you would pass to Array.prototype.reduce(reducer, ?initialValue) . MDN describes the reduce method as: The reduce() method appli
No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp() in Flutter and Firebase
How to downgrade Flutter SDK (Dart 1.x)
I upgraded my Flutter SDK and now my project is broken. I need to basically revert back to a Flutter SDK which uses Dart 1.x. I tried the following in the pubspec.yaml, environment: sdk: ">=1.19.0 <2.0.0" flutter: "^0.1.2" dependencies: flutter: sdk: flutter but now the project just simply doesn't build. Running "flutter packages get" in binformed... Package binformed requires Flutter SDK version
What does O(log n) mean exactly?
I am learning about Big O Notation running times and amortized times. I understand the notion of O(n) linear time, meaning that the size of the input affects the growth of the algorithm proportionally...and the same goes for, for example, quadratic time O(n2) etc..even algorithms, such as permutation generators, with O(n!) times, that grow by factorials. For example, the following function is O(n)
Axios get access to response header fields
I'm building a frontend app with React and Redux and I'm using axios to perform my requests. I would like to get access to all the fields in the header of the response. In my browser I can inspect the header and I can see that all the fields that I need are present(such as token, uid, etc...), but when I call const request = axios.post(`${ROOT_URL}/auth/sign_in`, props); request.then((response)=>{
RegEx match open tags except XHTML self-contained tags
You can't parse [X]HTML with regex. Because HTML can't be parsed by regex. Regex is not a tool that can be used to correctly parse HTML. As I have answered in HTML-and-regex questions here so many times before, the use of regex will not allow you to consume HTML. Regular expressions are a tool that is insufficiently sophisticated to understand the constructs employed by HTML. HTML is not a regular
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