Also, to fully use everything we know, let's also assume that we want to have a default value for our color array in case the value for the key we're looking for does not exist (is nil). Out of the box, Ajv supports JSON Schema (drafts 04, 06, 07, 2019-09. It allows implementing complex data validation logic via declarative schemas for your JSON data, without writing code. Using this specification let's assume you have a dictionary response that you retrieved from some API with hex color strings in it, under the key colors, that you want to convert into an array of UIColor instances. Ajv is used by a large number of JavaScript applications and libraries in all JavaScript environments - Node.js, browser, Electron apps, WeChat mini-apps etc. When the left hand side is non-optional, the current value of the left hand side variable is left untouched. If the right hand side value is nil or the conversion fails, and the left hand side variable is an optional, then nil is assigned to it. If it's successful, the value of the left hand side variable is overwritten. If the conversion fails, an error is logged on debug builds. The <- operator takes the value on its right hand side and tries to convert it into the type of the value on its left hand side. After that, add the framework to your project. textContent = "Superpowers:" const superPowers = hero.
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