One of the neat features of Fn is that you define your functions as container images. Fn isn’t prescriptive about what goes into the container as long as you can read requests and write responses — anything you package in a container that can read from STDIN and write to STDOUT can be a function. This flexibility sets Fn apart from other FaaS platforms which typically only offer a small set of supported languages.
Fn encourages you to use whichever language you are most productive in, and to help get you started, the Fn CLI can generate a function template — usually a HelloWorld — for a few different languages. Try it at home: Read the complete article here
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