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State callbacks in React

This a very quick post to highlight a feature in React that is frequently overlooked (at least by me 😊). The setState(), replaceState()…, and forceUpdate() methods of React.Component all take an optional callback function that is called when a state “transaction” is completed. Note the implication here (supported by explicit documentation) is that setState() and replaceState() are not synchronous updates of the state. One thing that was not obvious from the documentation is that these callbacks are called with no arguments, but with this set to the component instance.
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Emil Ong1 hr ago

Free SSL certificates without placing a file on your server using AWS Route53

This article shows you how to get a free Let’s Encrypt certificate for your domain when it’s not convenient for you to place a file on your…HTTP server for the challenge and you use Route53 as your DNS provider. For the impatient If you already know what all this means and/or you just want to get on with it, here you go: Prerequisites You have Ruby installed. You have your AWS credentials set up in your environment (either using the AWS CLI’s aws configure command or in environment variables). You have a Route53 hosted zone in place for your domain.
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Emil OngMar 31
Connecting Redux to your API

Connecting Redux to your API

I started using Redux last summer and one of the first things I needed to do was connect it to a backend. The awesome Redux docs have an…
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Emil Ong4 days ago
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Emil OngMar 306 min read
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