replace slice loop with append for simple and clear

Signed-off-by: Guangming Wang <guangming.wang@daocloud.io>

cloudmock/aws/mockec2/securitygroups.go

@@ -260,9 +260,7 @@ func (m *MockEC2) AuthorizeSecurityGroupEgress(request *ec2.AuthorizeSecurityGro
 		sg.IpPermissionsEgress = append(sg.IpPermissionsEgress, p)
 	}
 
-	for _, p := range request.IpPermissions {
-		sg.IpPermissionsEgress = append(sg.IpPermissionsEgress, p)
-	}
+	sg.IpPermissionsEgress = append(sg.IpPermissionsEgress, request.IpPermissions...)
 
 	// TODO: We need to fold permissions
 
@@ -318,9 +316,7 @@ func (m *MockEC2) AuthorizeSecurityGroupIngress(request *ec2.AuthorizeSecurityGr
 		sg.IpPermissions = append(sg.IpPermissions, p)
 	}
 
-	for _, p := range request.IpPermissions {
-		sg.IpPermissions = append(sg.IpPermissions, p)
-	}
+	sg.IpPermissions = append(sg.IpPermissions, request.IpPermissions...)
 
 	// TODO: We need to fold permissions
 

dnsprovider/pkg/dnsprovider/providers/aws/route53/stubs/route53api.go

@@ -60,9 +60,7 @@ func (r *Route53APIStub) ListResourceRecordSetsPages(input *route53.ListResource
 		output.ResourceRecordSets = []*route53.ResourceRecordSet{}
 	} else {
 		for _, rrsets := range r.recordSets[*input.HostedZoneId] {
-			for _, rrset := range rrsets {
-				output.ResourceRecordSets = append(output.ResourceRecordSets, rrset)
-			}
+			output.ResourceRecordSets = append(output.ResourceRecordSets, rrsets...)
 		}
 	}
 	lastPage := true

hack/machine_types/machine_types.go

@@ -144,9 +144,7 @@ func run() error {
 			}
 		}
 
-		for _, p := range result.PriceList {
-			prices = append(prices, p)
-		}
+		prices = append(prices, result.PriceList...)
 
 		if result.NextToken != nil {
 			input.NextToken = result.NextToken

nodeup/pkg/model/kubelet.go

@@ -545,9 +545,7 @@ func (b *KubeletBuilder) buildKubeletConfigSpec() (*kops.KubeletConfigSpec, erro
 
 	// Use --register-with-taints for k8s 1.6 and on
 	if b.Cluster.IsKubernetesGTE("1.6") {
-		for _, t := range b.InstanceGroup.Spec.Taints {
-			c.Taints = append(c.Taints, t)
-		}
+		c.Taints = append(c.Taints, b.InstanceGroup.Spec.Taints...)
 
 		if len(c.Taints) == 0 && isMaster {
 			// (Even though the value is empty, we still expect <Key>=<Value>:<Effect>)

pkg/acls/gce/storage.go

@@ -64,9 +64,7 @@ func (s *gcsAclStrategy) GetACL(p vfs.Path, cluster *kops.Cluster) (vfs.ACL, err
 	}
 
 	var acls []*storage.ObjectAccessControl
-	for _, a := range bucket.DefaultObjectAcl {
-		acls = append(acls, a)
-	}
+	acls = append(acls, bucket.DefaultObjectAcl...)
 
 	acls = append(acls, &storage.ObjectAccessControl{
 		Email:  serviceAccount,

pkg/model/awsmodel/autoscalinggroup.go

@@ -310,9 +310,7 @@ func (b *AutoscalingGroupModelBuilder) buildAutoScalingGroupTask(c *fi.ModelBuil
 	t.Tags = tags
 
 	processes := []string{}
-	for _, p := range ig.Spec.SuspendProcesses {
-		processes = append(processes, p)
-	}
+	processes = append(processes, ig.Spec.SuspendProcesses...)
 	t.SuspendProcesses = &processes
 
 	t.InstanceProtection = ig.Spec.InstanceProtection

pkg/resources/ali/ali.go

@@ -327,9 +327,7 @@ func (d *clusterDiscoveryALI) ListSecurityGroup() ([]*resources.Resource, error)
 				}
 			}
 
-			for _, block := range blocked {
-				groupTracker.Blocked = append(groupTracker.Blocked, block)
-			}
+			groupTracker.Blocked = append(groupTracker.Blocked, blocked...)
 			resourceTrackers = append(resourceTrackers, groupTracker)
 		}
 	}
@@ -558,9 +556,7 @@ func (d *clusterDiscoveryALI) ListVPC() ([]*resources.Resource, error) {
 			for _, vpc := range vpcs {
 				if name == vpc.VpcName {
 					vpcsToDelete = append(vpcsToDelete, vpc.VpcId)
-					for _, vswitch := range vpc.VSwitchIds.VSwitchId {
-						vswitchsToDelete = append(vswitchsToDelete, vswitch)
-					}
+					vswitchsToDelete = append(vswitchsToDelete, vpc.VSwitchIds.VSwitchId...)
 				}
 			}
 		}

pkg/resources/aws/aws.go

@@ -258,9 +258,7 @@ func FindAutoscalingLaunchConfiguration(cloud awsup.AWSCloud, name string) (*aut
 		LaunchConfigurationNames: []*string{&name},
 	}
 	err := cloud.Autoscaling().DescribeLaunchConfigurationsPages(request, func(p *autoscaling.DescribeLaunchConfigurationsOutput, lastPage bool) bool {
-		for _, t := range p.LaunchConfigurations {
-			results = append(results, t)
-		}
+		results = append(results, p.LaunchConfigurations...)
 		return true
 	})
 	if err != nil {
@@ -1094,9 +1092,7 @@ func DescribeInternetGateways(cloud fi.Cloud) ([]*ec2.InternetGateway, error) {
 	}
 
 	var gateways []*ec2.InternetGateway
-	for _, o := range response.InternetGateways {
-		gateways = append(gateways, o)
-	}
+	gateways = append(gateways, response.InternetGateways...)
 
 	return gateways, nil
 }
@@ -1116,9 +1112,7 @@ func DescribeInternetGatewaysIgnoreTags(cloud fi.Cloud) ([]*ec2.InternetGateway,
 
 	var gateways []*ec2.InternetGateway
 
-	for _, igw := range response.InternetGateways {
-		gateways = append(gateways, igw)
-	}
+	gateways = append(gateways, response.InternetGateways...)
 
 	return gateways, nil
 }

pkg/resources/ops/delete.go

@@ -40,9 +40,7 @@ func DeleteResources(cloud fi.Cloud, resourceMap map[string]*resources.Resource)
 			depMap[block] = append(depMap[block], k)
 		}
 
-		for _, blocked := range t.Blocked {
-			depMap[k] = append(depMap[k], blocked)
-		}
+		depMap[k] = append(depMap[k], t.Blocked...)
 
 		if t.Done {
 			done[k] = t

protokube/pkg/gossip/ali/seeds.go

@@ -62,9 +62,7 @@ func (p *SeedProvider) GetSeeds() ([]string, error) {
 
 	for _, instance := range instances {
 		// TODO: Multiple IP addresses?
-		for _, ip := range instance.VpcAttributes.PrivateIpAddress.IpAddress {
-			seeds = append(seeds, ip)
-		}
+		seeds = append(seeds, instance.VpcAttributes.PrivateIpAddress.IpAddress...)
 	}
 
 	return seeds, nil

protokube/pkg/protokube/gossipdns.go

@@ -33,9 +33,7 @@ func (p *GossipDnsProvider) Replace(fqdn string, values []string) error {
 		Name:    fqdn,
 		RrsType: "A",
 	}
-	for _, value := range values {
-		record.Rrdatas = append(record.Rrdatas, value)
-	}
+	record.Rrdatas = append(record.Rrdatas, values...)
 	return p.DNSView.ApplyChangeset(p.Zone, nil, []*dns.DNSRecord{record})
 }
 

upup/pkg/fi/cloudup/gce/network.go

@@ -66,9 +66,7 @@ func performNetworkAssignmentsIPAliases(ctx context.Context, c *kops.Cluster, cl
 
 	var regions []*compute.Region
 	if err := cloud.Compute().Regions.List(cloud.Project()).Pages(ctx, func(p *compute.RegionList) error {
-		for _, r := range p.Items {
-			regions = append(regions, r)
-		}
+		regions = append(regions, p.Items...)
 		return nil
 	}); err != nil {
 		return fmt.Errorf("error listing Regions: %v", err)
@@ -89,9 +87,7 @@ func performNetworkAssignmentsIPAliases(ctx context.Context, c *kops.Cluster, cl
 	var subnets []*compute.Subnetwork
 	for _, r := range regions {
 		if err := cloud.Compute().Subnetworks.List(cloud.Project(), r.Name).Pages(ctx, func(p *compute.SubnetworkList) error {
-			for _, s := range p.Items {
-				subnets = append(subnets, s)
-			}
+			subnets = append(subnets, p.Items...)
 			return nil
 		}); err != nil {
 			return fmt.Errorf("error listing Subnetworks: %v", err)

upup/pkg/fi/cloudup/gcetasks/instance.go

@@ -73,9 +73,7 @@ func (e *Instance) Find(c *fi.Context) (*Instance, error) {
 
 	actual := &Instance{}
 	actual.Name = &r.Name
-	for _, tag := range r.Tags.Items {
-		actual.Tags = append(actual.Tags, tag)
-	}
+	actual.Tags = append(actual.Tags, r.Tags.Items...)
 	actual.Zone = fi.String(lastComponent(r.Zone))
 	actual.MachineType = fi.String(lastComponent(r.MachineType))
 	actual.CanIPForward = &r.CanIpForward

upup/pkg/fi/cloudup/gcetasks/instancetemplate.go

@@ -103,9 +103,7 @@ func (e *InstanceTemplate) Find(c *fi.Context) (*InstanceTemplate, error) {
 
 		p := r.Properties
 
-		for _, tag := range p.Tags.Items {
-			actual.Tags = append(actual.Tags, tag)
-		}
+		actual.Tags = append(actual.Tags, p.Tags.Items...)
 		actual.MachineType = fi.String(lastComponent(p.MachineType))
 		actual.CanIPForward = &p.CanIpForward
 

upup/pkg/kutil/import_cluster.go

@@ -635,9 +635,7 @@ func findInstances(c awsup.AWSCloud) ([]*ec2.Instance, error) {
 
 	err := c.EC2().DescribeInstancesPages(request, func(p *ec2.DescribeInstancesOutput, lastPage bool) bool {
 		for _, reservation := range p.Reservations {
-			for _, instance := range reservation.Instances {
-				instances = append(instances, instance)
-			}
+			instances = append(instances, reservation.Instances...)
 		}
 		return true
 	})