Go (Golang) io.MultiReader Tutorial

In this episode we are going to have a look at the io.MultiReader utility function from the io package in the Go standard library. This is somewhat similar to the io.MultiWriter func that we explored in one of the other tutorials, and it’s extremely useful if we want to concatenate multiple files or more in general multiple io.Reader(s) into a single io.Reader. This will be particularly handy with multiple readers, reducing considerably the amount of duplicate code in your Go program. In this example we are going to attempt read a set of standard csv files and try concatenate them using the io.MultiReader func such that will be processed as one.

io.MultiReader – https://golang.org/pkg/io/#MultiReader
io.Reader – https://golang.org/pkg/io/#Reader

io.Reader Interface Tutorial – https://www.youtube.com/watch?v=O-MeKOuvzYE

Source Code – https://play.golang.org/p/e9W74JT7VjI

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