Linter检查结构初始化中是否显式设置了所有字段

Question

I want to have a static assert or linter for my go code that checks that I do not – by mistake – initialise the structs in my config file with default values for any field. I want everything to be set explicitly.

Is there a way to achieve this?

EDIT: Clarified question.

Answer 1

Check out the validator package. https://gopkg.in/go-playground/validator.v9

We use it extensively in our code to validate structs. e.g.

type Config struct {
  Url      string  `validate:"required"`
  MaxHops  int     `validate:"omitempty,min=0"`
  MaxTerms int     `validate:"omitempty,min=0"`
  MaxCost  float64 `validate:"omitempty,min=0"`
}

func Init(cfg *Config) error {
  if err := validator.New().Struct(cfg); err != nil {
    return errors.Wrap(err, "error in config")
  }
  //do something
}