oops... mistake in it.
printS, err := conv(func(s string, err error), fmt.Println) or panic(err) _, err := []string{"hello}.Map(strings. ToUpper).MustEach(printS) or panic(err) count, err := conv(func(s string) n int, fmt.Println) or panic(err) n := []string{"hello}.Map(strings.ToUpper).Sum(count) count, err := conv(func(s string) (n int, err error), fmt.Println) or panic(err) n, err := []string{"hello}.Map(strings.ToUpper).MustSum(count) or panic(err) more like this, take advantage of return type and names to do more conversion. On Friday, May 26, 2017 at 2:45:33 PM UTC+2, mhh...@gmail.com wrote: > > or this, > > printS, err := conv(func(s string, err error), fmt.Println) or panic(err) > _, err := []string{"hello}.Map(strings.ToUpper).MustEach(printS) or > panic(err) > > count, err := conv(func(n int), fmt.Println) or panic(err) > n := []string{"hello}.Map(strings.ToUpper).Sum(count) > > count, err := conv(func(n int, err error), fmt.Println) or panic(err) > n, err := []string{"hello}.Map(strings.ToUpper).MustSum(count) or > panic(err) > > that'd be great... > > On Friday, May 26, 2017 at 2:25:37 PM UTC+2, mhh...@gmail.com wrote: >> >> for the fun, >> >> I want to write >> []string{"hello}.Map(strings.ToUpper).Each(fmt.Println) >> >> would not work, func param are incompatible. >> >> let s apply static rules to convert it, >> >> printS, err := conv(func(s string), fmt.Println) or panic(err) >> []string{"hello}.Map(strings.ToUpper).Each(printS) >> >> Now it s possible. >> >> And if one does a fmt.MustPrintln to get ride of the error while still >> handling it (recoverable) >> rather than ignore it as of today, >> you can write that, and handle error via recover, >> or simply ignore it as in the previous ex. >> >> printS, err := conv(func(s string), fmt.MustPrintln) or panic(err) >> >> []string{"hello}.Map(strings.ToUpper).Each(printS) >> >> >> >> 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. >>> >> -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.