Go generators

main.go

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// Click here and start typing.
package main

import "fmt"
import "io"

type Gen interface {
   Next(args any...) (any, error)  // EOF
   End() bool
}

type IterationGen struct {
   end int
   step int
   cur int
}

func (g *IterationGen) Next(args any...) (any, error) {
   if g.cur >= g.end {
      return nil, io.EOF
   }
   cur := g.cur
   g.cur += g.step
   return g.cur, nil
}

func (g *IterationGen) End() bool {
   ruturn g.cur >= g.end
}

func NewIterator(start int, end int, step int) *IterationGen {
   return &IterationGen{
     cur: start,
     step: step,
     end: end,
   }
}

func main() {
	
}