Google Go Tutorial 9 Published On Interfaces

Interfaces can be tricky to understand for novice developers. I remember it took a while for the concept to click with me in the late 90s with interfaces in Delphi. In Google Go (aka Golang), there are no objects so interfaces are just a collection of methods. If the type implements those methods then it implements that interface, even without explicitly saying so.

In tutorial 9, I explain about them with a few examples. You can copy and paste them into Go Playground

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