validation := NewValidation()
validation.Field("name").Required().MinLength(2).MaxLength(3)

var (
	result ValidationResult
	errors ValidtaionErrors
	error  ValidtaionError
)

result = validation.Validate(map[string]interface{}{})
result.HasError() // => true

errors = result.Errors()
error, ok := errors["name"]
error.Message() // => "required"


result = validation.Validate(map[string]interface{}{"name": "1"})
errors = result.Errors()
error, ok := errors["name"]
error.Message() // => "must have 2 or more elements"

validation := NewValidation()
validation.Field("name").Required()

validation := NewValidation()
validation.Field("age").Min(0).Max(999)
validation.Field("rate").Min(0.5).Max(0.9)

validation := NewValidation()
validation.Field("password").MinLength(6).MaxLength(8)

validation := NewValidation()
validation.Field("num").Pattern("^[0-9]+$")

validation := NewValidation()
validation.Field("ids").Each().Min(0).Max(6)