PairIterator for HSCAN/etc?

[ash2k]

Currently the pattern is:

iter := client.HScan(ctx, redisKey, 0, "", 0).Iterator()
for iter.Next(ctx) {
	k := iter.Val()
	if !iter.Next(ctx) {
		err := iter.Err()
		if err != nil {
			return err
		}
		// This shouldn't happen
		return errors.New("invalid Redis reply")
	}
	v := iter.Val()
	// do stuff with k and v
}
return iter.Err()

Would be nice to have something higher-level to hide that boilerplate. Maybe:

iter := client.HScan(ctx, redisKey, 0, "", 0).PairIterator()
for iter.Next(ctx) {
	k, v := iter.Val()
	// do stuff with k and v
}
return iter.Err()

WDYT?

p.s. current approach confuses people too #1339