vim .zshrc
187 # golang
188 #export GOPATH=~/go
189 #export PATH=$PATH:$GOPATH/bin
190 # export GOROOT_FINAL=/usr/local/Cellar/go/1.10.3/libexec
191 export GO111MODULE=on
192 export GOPROXY=https://goproxy.io
193
go mod init study-go
go mod tidy
go mod vendor