Dawn | Docker-based infrastructure setup and operation | Continuous Deployment library

If your object has properties that are "indexes" (numeric strings in range 0 .. 2^32-1), these properties are always enumerated is sorted numeric order. There's no way you can change that.

Have your server app return data in a more reasonable format, like an array of number-string pairs or an array of objects {id, value}. If this is not possible, convert your object to the said format on the client side, for example:

In your test, you setup a mock version of value, dispatch which does not trigger update when you click on Block mine button.

But in actual code, in App.tsx you use useReducer hook (deep down it trigger re-render and new props is passed to Statistics via Context).

To fix it, just simulate your test with useReducer

If your useEffect depends on a variable that you're updating on the same useEffect there will always be the re-render and cause a loop.

If you want it to execute only once, you should remove the data variable from the useEffect dependency array.

But if you really wanna mutate the state every time that the data variable changes, my recommendation is to create another state for the mutated data.

For example setFormattedData would not change the data itself, but you would still have a state for this data in the format that you want.

For each dateArr element, you're iterating over events and returning a list of objects with the two specified options. Instead, you can use Array#find to check if it exists or not:

I figured out - we can use pydantic or schema for django. They offers validations also. I preferred pydantic.

1. https://github.com/keleshev/schema
2. https://pydantic-docs.helpmanual.io/

EDIT

Pydentic example

Schema

To make the time below the image, remove

You could try this:

Mode() returns 2 values when there is a tie. Simply take the first one from the Mode():

Because of the lifecycle of React, when you are using a functional component, it is also considered stateless and will re-render every time there is an update in its parent component, whether there is a change in props passing into the child.

There are two ways you can do to change this behaviour,

1. use class component and decide whether to update it using shouldComponentUpdate

2. or the recommended way using React.memo,