LearningGO

Learning GO programming.

Download GO : https://golang.org/dl/
Effective GO Documentation : https://golang.org/doc/effective_go#introduction
How Do You Structure Your Go Apps : https://oreil.ly/0zHY4
FOSS - Open Source Licenses : https://oreil.ly/KVlrd
Profiling GO : https://oreil.ly/HHe9c
Type Parameters-Draft Design : https://oreil.ly/POhSg

VSCode Extension :

• GO
• Open Command Palette and search GO Tools. Install all tools listed .

GO Commands

1. go version - To check GO version.
2. go env - To check GO environment config.
3. go run - Compile code into binary in temporary directory. Once execution completed, will delete the binary.
4. go build - Build binary for later use. Creates executable .exe file.
5. go install - Takes an argument(source code repository) followed by an @ plus the version of the tool. It then downloads, compiles, and install into $GOPATH/bin direrctory.
6. go fmt - Automatically reformat codes to match the standard format.
7. go mod init <repo> - Modules initialization
8. go doc PACKAGE_NAME.IDENTIFIER_NAME - To display documentation for specific identifier in the package.
9. go list -m -versions MODULE_PATH - To check versions of the module available.
10. go get MODULE_PATH@VERSION - To upgrade module version.
11. go get -u=patch MODULE_PATH - To upgrade patch version for the same module version.
12. go mod tidy - To remove unused versions.
13. go mod vendor - To create vendor directory contains all of modules dependencies.
14. go test - To run test and generate report.
15. go test -v -cover -coverprofile=c.out - Calculates coverage information and includes summary in the test output and save into a file.
16. go tool cover -html=c.out - Generates HTML representation of the source code.
17. go test -bench=. -benchmem - Run all benchmarks and includes memory allocation information.
18. go test -race - Concurrency race checker.

GO Tools

1. hey - Load tests HTTP servers.

go install github.com/rakyll/hey@latest

2. goimports - Enhanced version of go fmt which also cleans up import statements.

go install golang.org/x/tools/cmd/goimport@latest.
go imports -l -w .

"-l" = prints the file with incorrect formatting.
"-w"= modify the files in place.
"." = specifies the file to be scanned which in this case is everything in the current directory and all of its subdirectory.

3. golint & go vet - To ensure the code follows sytle guidelines.

go install golang.org/x/lint/golint@latest.
golint ./...
go vet ./...

4. golangci-lint - Combined tools for golint, go vet and set of other code quality tools.

go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest.
golangci-lint run.

To configure, go to root project and find .golangci.yml.

Documentation: https://oreil.ly/vufj1

4. shadow - To detect shadowed variables. Include shadow in vet task in Makefile.

go install golang.org/x/tools/go/analysis/passes/shadow/cmd/shadow@latest shadow ./...

5. wire - A dependency injection helper.

go get github.com/google/wire/cmd/wire

Documentation: https://github.com/google/wire