Q121. What is the proper way to access Redux store?
The best way to access your store in a component is to use the `connect()` function, that creates a new component that wraps around your existing one. This pattern is cal...
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Q122. What is the difference between component and container in React Redux?
**Component** is a class or function component that describes the presentational part of your application. **Container** is an informal term for a component that is conne...
Q123. What is the purpose of the constants in Redux?
Constants allows you to easily find all usages of that specific functionality across the project when you use an IDE. It also prevents you from introducing silly bugs cau...
Q124. What are the different ways to write `mapDispatchToProps()`?
There are a few ways of binding _action creators_ to `dispatch()` in `mapDispatchToProps()`. Below are the possible options: ```javascript const mapDispatchToProps = (dis...
Q125. What is the use of the `ownProps` parameter in `mapStateToProps()` and `mapDispatchToProps()`?
If the `ownProps` parameter is specified, React Redux will pass the props that were passed to the component into your _connect_ functions. So, if you use a connected comp...
Q126. How to structure Redux top level directories?
Most of the applications has several top-level directories as below: 1. **Components**: Used for _dumb_ components unaware of Redux. 2. **Containers**: Used for _smart_ c...
Q127. What is redux-saga?
`redux-saga` is a library that aims to make side effects (asynchronous things like data fetching and impure things like accessing the browser cache) in React/Redux applic...
Q128. What is the mental model of redux-saga?
_Saga_ is like a separate thread in your application, that's solely responsible for side effects. `redux-saga` is a redux _middleware_, which means this thread can be sta...
Q129. What are the differences between `call()` and `put()` in redux-saga?
Both `call()` and `put()` are effect creator functions. `call()` function is used to create effect description, which instructs middleware to call the promise. `put()` fu...
Q130. What is Redux Thunk?
_Redux Thunk_ middleware allows you to write action creators that return a function instead of an action. The thunk can be used to delay the dispatch of an action, or to ...