First difference: Sometimes you don’t want to catch errors at the place they arise, but in the code that uses this function, so you don’t catch them. In that case you can’t substitute then() and finally(). Sometimes you have to clean something up whether there was an error or not (nulling references, clearing timeouts … … Read more
I believe it uses something like the index of the item as the default when you do not provide a key. This can be validated by using {#each things as thing, index (index)} <Thing current={thing.color}/> {/each} which gives the same behavior as not using a key in the first place. Let’s call the <Thing> that … Read more
I think useCallback is what you want to use so you can get the width and height when it changes. const [height, setHeight] = useState(null); const [width, setWidth] = useState(null); const div = useCallback(node => { if (node !== null) { setHeight(node.getBoundingClientRect().height); setWidth(node.getBoundingClientRect().width); } }, []); return ( <div ref={div}> … </div> )
You can’t create an objectStore in an onsuccess method. You can only do this in a upgradeneeded event. Quote from docs: When you create a new database or increase the version number of an existing database (by specifying a higher version number than you did previously, when Opening a database), the onupgradeneeded event will be … Read more
Overriding the Content-Type request header is not allowed for no-cors requests. Change the mode to cors. (You won’t be able to read the response without doing that either).
To really understand which one to use, we need to understand what’s happening under the hood. Material UI uses emotion(, or whatever styling engine you chose manually), in order to style its components. On the surface, the following two might seem to be doing the same thing: <Box sx={{ height:’50px’, width:’25px’ }}/> <div style={{ height:’50px’, … Read more
You should invoke the Array.prototype.filter function there. var filteredArray = YourArray.filter(function( obj ) { return obj.value === 1; }); .filter() requires you to return the desired condition. It will create a new array, based on the filtered results. If you further want to operate on that filtered Array, you could invoke more methods, like in … Read more
Using a generator: function *intersperse(a, delim) { let first = true; for (const x of a) { if (!first) yield delim; first = false; yield x; } } console.log([…intersperse(array, ‘&’)]); Thanks to @Bergi for pointing out the useful generalization that the input could be any iterable. If you don’t like using generators, then [].concat(…a.map(e => … Read more
Collection variables You can access collection variables (and all variables) in the pre-request and test script sections using pm.variables.get(“variableName”). However, you can only define and update collection variables by editing the collection details via modal. Note: For your current solution using environment variables getting messy, remember you can always use pm.environment.set() to reset the value … Read more
I found this comment by Arcanis (the lead maintainer of Yarn) on an issue asking about what to include in a .gitignore. It may answer your question: .yarn/plugins and .yarn/releases contain the Yarn releases used in the current repository (as defined by yarn set version). You will want to keep them versioned (this prevents potential … Read more