No, it’s not possible. (Disclaimer: your syntax works and does both destructuring and returning, but it is equivalent to ({ id, name, price } = newItem); // assigns global variables return newItem; which is probably not what you wanted) To do what you want (which I assume is creating a new object), you need to … Read more
If you have Resharper installed in your VS 2013 – from today on you can switch to using ES6:
react-redux is the library that is passing these methods to your component as props. dispatch() is the method used to dispatch actions and trigger state changes to the store. react-redux is simply trying to give you convenient access to it. Note, however, that dispatch is not available on props if you do pass in actions … Read more
No. Not only will .done likely not be supported in the future versions of the spec – it is unneeded. Quoting from the threads Mariusz linked to: Domenic: it’s still error-prone: if you slip up and don’t follow the rule even once, you might silence an error forever. Mark Miller (who pioneered the concept of … Read more
The problem was not with the recursion. Your function did call itself recursively, it just didn’t yield values outside. When you call helper(), you get an iterator as a return value, but you wanted the iterated values of that iterator to be yielded. If you want to yield recursively, you need to yield *. Try … Read more
Try to import ‘store’ with curly brackets import {store} from ‘../store/index’ store.getters.appSettings Another option is to access from the vue property import Vue from ‘vue’ Vue.store.getters.appSettings
This is just meant to be an addition to jonas w’s solutions. If you need the key of the current value: const object = {a:2, b:4, c:6, d:8}; for (const [index, [key, value]] of Object.entries(Object.entries(object))) { console.log(`${index}: ${key} = ${value}`); } Object.entries(object).forEach(([key, value], index) => { console.log(`${index}: ${key} = ${value}`); }); Of course, you can … Read more
Don’t forget to return the mapped array , like: lapsList() { return this.state.laps.map((data) => { return ( <View><Text>{data.time}</Text></View> ) }) } Reference for the map() method: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map
When you have export default { bar() {} } The actual object exported is of the following form: exports: { default: { bar() {} } } When you do a simple import (e.g., import foo from ‘./foo’;) you are actually getting the default object inside the import (i.e., exports.default). This will become apparent when you … Read more
Does this means, inside componentWillMount, if we call setState in an async method’s callback (can be a promise callback), React blocks initial rendering until the callback is executed? No, see here. The following code doesn’t block render (bear in mind this would be an anti pattern anyways to call setState there) componentWillMount: function() { new … Read more