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When an API requires implementation details from the user, many developers use an interface for help. However, another way to allow developers to provide implementation details for an API is to accept a function instead. Go supports declaring function types which can be used to define a contract similar to how interfaces define a contract. A good example of an API that uses functions over an interface is the HTTP package. The HTTP package has the user bind a handler function into different routes.
In this video, Miki will define a Go HTTP handler to act as a health check function. The handler function Miki writes needs to have the necessary parameters to satisfy the Go HTTP HandlerFunc contract. While implementing the handler, Miki demonstrates the practicality and impact function contracts have on overall developer experience. Watch and learn the role of each parameter in a Go HTTP function and some pitfalls to avoid when routing HTTP requests.
Things you will learn in this video
We have taught Go to thousands of developers all around the world since 2014. There is no other company that has been doing it longer and our material has proven to help jump start developers 6 to 12 months ahead of their knowledge of Go. We know what knowledge developers need in order to be productive and efficient when writing software in Go.
Our classes are perfect for both experienced and beginning engineers. We start every class from the beginning and get very detailed about the internals, mechanics, specification, guidelines, best practices and design philosophies. We cover a lot about "if performance matters" with a focus on mechanical sympathy, data oriented design, decoupling and writing production software.
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