Answer1215

摘要： Values assigned with let and const are seen everywhere in JavaScript. It's become common to hear them explained like so: "const creates an constant (i 阅读全文

摘要： function solution( tags = ['ul', 'ol']) { const [uls, ols] = tags.map(tag => Array.from($(`${tag}`))); const [logUl, logOl] = tags.map(tag => new Logg 阅读全文

摘要： JavaScript provides primitive types and means of processing those. However, those are not enough. Real data must somehow come into the program and dat 阅读全文

摘要： Functions are first class in JavaScript. This means we can treat a function like any other data. This also means we can end up with a function as the 阅读全文

摘要： The alt method allows us to recover from a nothing with a default Maybe, but sometimes our recovery efforts might need to enlist some logic to recover 阅读全文

摘要： Once we’re using Maybes throughout our code, it stands to reason that at some point we’ll get a Maybe and want to continue applying transformations. W 阅读全文

摘要： In this lesson I refactor some code that utilizes the Mutation component to update client-side cache to use the new ApolloConsumer component baked int 阅读全文

摘要： Sometimes, we run into situations where we end up with a Maybe within the context of another Maybe. Nested structures like this can get really confusi 阅读全文

摘要： In this lesson, we’ll look at the propPath utility function. We’ll ask for a property multiple levels deep in an object and get back a Maybe. We’ll ge 阅读全文

摘要： In this lesson, we’ll use a Maybe to safely operate on properties of an object that could be undefined. We’ll use our initial code as the basis for a  阅读全文