sxmbaka / go-plgrd

Go tutorials for absolute begginers. Complete with code examples and comments explaining them.

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General

1. Hello World in Go
2. Semicolons in Go
3. Short Declarations
   (Using the := operator)
4. iota in Go
5. Enumerations in Go

GO Runtime Environment Variables

What are Go Runtime Environment Variables?

The go env command prints the value of environment variables used by the Go tools. These variables are used to configure the behavior of the Go tools and the Go runtime. These runtime environment variables are used to control the behavior of the Go runtime, and the Go tools. The Go tools include the go command, the gofmt command, and the godoc command. The Go runtime is the part of the Go toolchain that executes Go programs.

Manipulating Go runtime environment variables:

• Show all environment variables

  go env

• Show a specific environment variable

  go env [GOPATH]

• Set an environment variable to a value

  go env -w [GOBIN]=[path/to/directory]

• Reset an environment variable's value

  go env -u [GOBIN]

• Get help on a specific subcommand

  # tells you about the -w flag
  go help env -w

• Get more help

  # tells you about the go env command
  go help env

  # tells you about all the Go environment variables
  go help environment

Read further at:

• A whirlwind tour of Go runtime environment variables - Dave Cheney
• Go your own way - Sourav Choudhary
• Go environment variables explained in 5 mins - GolangDojo (YT)
• Golang Environment and Golang Command - Wahyu Eko Hadi Saputro
• Go runtime environment variables - Golang Docs
• The Go's official env.go file

The following environment variables ($name or %name%, depending on the host operating system) control the run-time behavior of Go programs. The meanings and use may change from release to release.

This arrangement lists the Go runtime environment variables in alphabetical order for easier reference and lookup.

1. GOCACHE and GOTMPDIR
2. GOGC
3. GO111MODULE
4. GOARCH and GOOS
5. GOBIN
6. GOENV
7. GOFLAGS
8. GOMAXPROCS
9. GOMOD
10. GOPATH
11. GOPROXY
12. GOROOT
13. GOTRACEBACK
14. GODEBUG

Variables

1. Variable Types
2. Operations on variables
   (You might need to study Operators in case of any anomalies)
3. Type Conversions
4. Type Inference
5. Type Inference
   (Read further at https://go.dev/blog/type-inference)
6. Variable Naming Conventions
7. Variable Scopes
8. Variable Shadowing
9. Constants in Go
   (Read further at https://golangbyexample.com/constant-golang/)
10. Abbreviated Variable Declarations

Tip: Create a playground directory in the root directory and then test these examples yourself.