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Update 'go-cheatsheet.md'

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Jeffrey Paul 2020-10-05 10:01:14 +00:00
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go-cheatsheet.md
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# go (golang) cheatsheet
## tools and environment
goimports manages your import lines and should be used instead of fmt, golangci-lint will tell you when you're doing silly things, and gotest will do the same thing as `go test` but with color output in terminal.
```
go get golang.org/x/tools/cmd/goimports
go get github.com/golangci/golangci-lint/cmd/golangci-lint@v1.31.0
go get -u github.com/rakyll/gotest
```
## code style
* obviously, always gofmt
* run golangci-lint
## types and interfaces
Accept and provide `String() string` method and the associated `fmt.Stringer` interface.
Accept and provide `GoString() string` method so `%#v` (see below) works right.
## testing
### use testify