Proposal: Introducing a New Package for Iterators in Go

2023/08/09

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The article proposes the addition of a new package called 'iter' in Go, which defines helpful types for iterating over sequences. This proposal is part of a collection of updates to the standard library for the new 'range over function' feature. The 'iter' package is expected to be used by other APIs to indicate that they return iterable functions. The article also discusses the advantages of push iterators over pull iterators and explains that iterators can be defined in push form and converted to pull form as needed. The author mentions that the standard library would benefit from converting certain packages, such as os, filepath, bufio, archive/tar, and database/sql, to use iterators. Overall, the 'iter' package aims to provide developers with a more convenient and efficient way to iterate over sequences in Go.