Go (Golang) io.MultiWriter Tutorial

In this episode we are going to go through an example on how we can use the powerful io.Writer interface and most importantly the io.MultiWriter utility function from the Go standard library to improve our Go codebase. In this case we are going to try write multiple files just by using a single io.Writer resulting from the concatenation of multiple io.Writers from the io.MultiWriter func. This can be particularly useful if you want to duplicate a file whilst it’s being written for backup or debug purposes.

io.MultiWriter – https://golang.org/pkg/io/#MultiWriter
io.Writer – https://golang.org/pkg/io/#Writer

io.Writer Interface Tutorial – https://www.youtube.com/watch?v=A1MS2LHcPuE

Source Code – https://play.golang.org/p/Iy1eIbi2fvo

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