environment

Documentation

Index

• type Env
  • func New() *Env
  • func (e *Env) Close() error
  • func (e *Env) Defer(fn func())
  • func (e *Env) DeferErr(errMsg string, fn func() error)
  • func (e *Env) Go(fn func())

Types

type Env

type Env struct {
	// contains filtered or unexported fields
}

Env controls goroutines and deferred functions. Think of it as the "main thread." It is not goroutine-safe.

func New

func New() *Env

func (*Env) Close

func (e *Env) Close() error

Close waits for all functions run with Go to finish. Then, it runs all Defer-ed functions. The defered functions are called in reverse order. The Environment must not be used after Close is called.

func (*Env) Defer

func (e *Env) Defer(fn func())

Defer saves fn, which will be run on Close.

func (*Env) DeferErr

func (e *Env) DeferErr(errMsg string, fn func() error)

DeferErr saves fn, which will be run on Close.

func (*Env) Go

func (e *Env) Go(fn func())

Go runs fn in a separate goroutine. Close will block until fn returns.