The app I'm creating has a lot of entities and relationships (database is relational). To get an idea, there're 25+ entities, with any type of relations between them (one-to-many, many-to-many).  The app is React + Redux based. For getting da...
An array starts as [] and then keeps growing with numbers being added to it.  I'm trying to create a selector to extract the last 2 elements of the array.  I've got the following:  const getHistory = (state) => state.score.history;  export...
How do I pass additional parameters to combined selectors? I am trying to  • Get data  • Filter data  • Add custom value to my data set / group data by myValue  export const allData = state => state.dataTable export const filterText = state...
I have a selector:  const someSelector = createSelector(    getUserIdsSelector,    (ids) => ids.map((id) => yetAnotherSelector(store, id), );                                      //     ^^^^^ (yetAnotherSelector expects 2 args)   That yetAnothe...
I'm having a pretty complex selectors structure in my project (some selectors may have up to 5 levels of nesting) so some of them are very hard to test with passing input state and I would like to mock input selectors instead. However I found tha...
Now I'm working in react-redux. I'm trying to get questions from state one-by-one. Generated unique ID to store the questions in the state, after user submits,answer also store with the question.  Uniqueid: {       Question: question goes her...
First of all, I have already gone through:   /react-redux/issues/779 Stackoverflow / React Redux rerenders when creating arrays Stackoverflow / How to deal with relational data in redux? Redux / Recipes / Managing normalized data   And have learnt a...
I'm reading the documentation for Redux and got stuck with reselect. The code below creates a selector and the documentation says, if we want to use it in two VisibleTodoList components then it won't work correctly.   import { createSelector...
I'm working on a React + redux + Immutable.js + reselect application. I'm considering a design where I'm using Immutable.js in the reducers and sagas, but don't want to couple this library with the smart components, so my presentation...
I'm not so far ago have met with new to me package as Reselect. I read carefully the official docs and already have an experience with my firsts selectors. But only one thing that I cannot understand - which is the best code architecture of imple...

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