as i m on it,
please consider, what below code might be with little imagination,
// Create a new Tomate
func (t Controller) Create(postColor *string) (jsonResBody *Tomate, err error) {
mustNot(postColor, nil) or
return ... &UserInputError{errors.New("Missing color parameter")}
color, _ := mustNot(strings.TrimSpace(*postColor), "") or
return ... &UserInputError{errors.New("color must not be empty")}
t.backend.Transact(func(backend *Tomates) {
must(backend.Filter(FilterTomates.ByColor(color)).Empty(), true) or {
err = &UserInputError{errors.New("color must be unique")}
return
}
jsonResBody = &Tomate{ID: fmt.Sprintf("%v", backend.Len()), Color: color}
backend.Push(jsonResBody)
})
return jsonResBody, err
}
>From that go compatible code,
// Create a new Tomate
func (t Controller) Create(postColor *string) (jsonResBody *Tomate, err
error) {
if postColor == nil {
return nil, &UserInputError{errors.New("Missing color parameter")}
}
color := strings.TrimSpace(*postColor)
if color == "" {
return nil, &UserInputError{errors.New("color must not be empty")}
}
t.backend.Transact(func(backend *Tomates) {
exist := backend.Filter(FilterTomates.ByColor(color)).Len()
if exist > 0 {
err = &UserInputError{errors.New("color must be unique")}
return
}
jsonResBody = &Tomate{ID: fmt.Sprintf("%v", backend.Len()), Color:
color}
backend.Push(jsonResBody)
})
return jsonResBody, err
}
On Wednesday, May 24, 2017 at 9:52:27 AM UTC+2, mhh...@gmail.com wrote:
>
> see the title, only for what s needed
> Slice/Splice/Each/Map/First/Last/Reverse/Sort ect ect not len, for reason.
> so interface system serves the userland by its definition of struct, and
> the basic slice type provided by the language is fully operational, without
> breaking, btw. i don t go further in evaluation, i leave that to the
> reader, just trying to work decently.
>
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