range on slices seem similar. The loop has the current index so looking ahead, behind, or reslicing is convenient.
>From https://golang.org/ref/spec#For_statements: For an array, pointer to array, or slice value a, the index iteration > values are produced in increasing order, starting at element index 0. If at > most one iteration variable is present, the range loop produces iteration > values from 0 up to len(a)-1 and does not index into the array or slice > itself. For a nil slice, the number of iterations is 0. Modifying the slice in-place doesn't change the iteration because of "does not index into the array or slice itself": https://play.golang.org/p/bXT4fwnDCC6 So to get prepend+next behavior you may need to try something else. Matt On Saturday, January 20, 2018 at 1:51:54 PM UTC-6, Peng Yu wrote: > > Hi, the concept of peekable iterator from python is very convenient. > Is there something similar in golang. > > > https://github.com/erikrose/more-itertools/blob/master/more_itertools/more.py#L134 > > > -- > Regards, > Peng > -- 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.
