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This tool adds zero-value return values to incomplete Go return statements, to save you time when writing Go. It is inspired by and based on goimports.

short screencast

full 30-second screencast: http://youtu.be/hyEMO9vtKZ8

For example, the following incomplete return statement:

func F() (*MyType, int, error) { return errors.New("foo") }

is made complete by adding nil and 0 returns (the zero values for *MyType and int):

func F() (*MyType, int, error) { return nil, 0, errors.New("foo") }

To install:

go get -u github.com/sqs/goreturns

To run:

goreturns file.go

To view a diff showing what it'd do on a sample file:

goreturns -d $GOPATH/github.com/sqs/goreturns/_sample/a.go

Editor integration: replace gofmt or goimports in your post-save hook with goreturns. By default goreturns calls goimports on files before performing its own processing.

It acts the same as gofmt (same flags, etc) but in addition to code formatting, also fixes returns.

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A gofmt/goimports-like tool for Go programmers that fills in Go return statements with zero values to match the func return types

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