pure functions define1. same input, same output.2. there will be no side effects during execution. currieization defining a function that passesonly a subset of the arguments to the function and returns a function that receives the remaining arguments is curriization…
a pure function is a function in which the same input always gets the same output without any observable side effects. from the definition of a pure function, the necessary conditions for a pure function can be extracted: pure functions…
preface i believe that the word pure function has been heard by friends to some extent, and it is the basis of functional programming. this article mainly discusses pure functions, including basic concepts, advantages, classic cases of use, and how…
1. read-only nature of prosp 1.1 pure functions personal understanding: pure functions are functions that do not change the input parameters inside the function, and the same input will always get the same output, and there are no side effects…
Method 1: global ingestion create a new _app.tsx file under the pages folder (next there is an app root component, new _app.tsx is rewriting the file) Method 2: module introduction the style file name for the method must be xxx.module.scss Method 3:…
step 1: create a new css file in the page or pages directory, such as style.css; step 2: import the css file in the jsx page, for example: Step 3: Add the className attribute to the complex you need to…
Hooks are functions that allow you to “hook” into React features in function components (hooks are a new feature in react16.8 that allows function components to use state and other react features) No.1 useState useState is used to create state…
We sometimes encounter the problem of calling setTimeout in a loop to iterate over, as shown below. The output result will only be 5 6, because JavaScript is single-threaded, executed sequentially, setTimeout is an asynchronous function, it will put the timer function…
Running setTimeout in a for loop is a very common pattern for front-end development. Recently, I was tested on a related question and found it very interesting and easy to make mistakes, so I recorded it as a study note.Let’s…
