mu      sync.Mutex
	added   map[T]bool // items added to set
	todo    []T        // items yet to be run
	wait    sync.Cond  // wait when todo is empty
	waiting int        // number of runners waiting for todo
}

func (w *Work[T]) init() {
	if w.added == nil {
		w.added = make(map[T]bool)
	}
}

// Add adds item to the work set, if it hasn't already been added.
func (w *Work[T]) Add(item T) {
	w.mu.Lock()

    q1 = {by_resource_name(res): res for res in j1 if res is not None}

    added, removed, common = keydiff(q0.keys(), q1.keys())

    changed = 0
    for k in sorted(common):
        if q0[k] != q1[k]:
            changed += 1

    print("## +++ ", args.new)
    print("## --- ", args.orig)
    print("## Added:", len(added))
    print("## Removed:", len(removed))
    print("## Updated:", changed)

				return true
			}
			return added // return true if at least one mapping was added
		}
		if isExecutable(info.Protection) {
			// NOTE: the meaning/value of Offset is unclear. However,
			// this likely doesn't matter as the text segment's file
			// offset is usually 0.
			addMapping(addr,
				addr+memRegionSize,
				read64(&info.Offset),
				regionFilename(addr),
				"")
			added = true
		}
		addr += memRegionSize

  namespace: default
spec:
  gateways:
  - istio-system/gateway-istio-autogenerated-k8s-gateway-default
  hosts:
  - first.domain.example
  http:
  - headers:
      request:
        add:
          my-added-header: added-value
        remove:
        - my-removed-header
    match:
    - headers:
        my-header:
          exact: some-value
      uri:
        prefix: /foo/
    name: default.grpc.0
    route:

	steps := []struct {
		added   *v1.ConfigMap
		updated *v1.ConfigMap
		deleted *v1.ConfigMap
	}{
		{added: cm},

		// Handle misconfiguration errors.
		{updated: badCM},
		{updated: cm},
		{updated: badCM2},
		{updated: badCM},
		{updated: cm},
		{updated: badCM3},
		{updated: cm},

		// Handle deletion.
		{deleted: cm},
		{added: cm},
	}

	for i, step := range steps {

     * </ul>
     *
     * @param ruleSource the rule source object to be added
     * @return this
     */
    ComponentMetadataHandler all(Object ruleSource);

    /**
     * Adds a class based rule that may modify the metadata of any resolved software component.
     *
     * @param rule the rule to be added
     * @return this
     *
     * @since 4.9
     */

		{
			name: "Pod Status type is PodRunning",
			event: watch.Event{
				Type: watch.Added,
				Object: &corev1.Pod{
					Status: corev1.PodStatus{
						Phase: corev1.PodRunning,
					},
				},
			},
			want:    true,
			wantErr: false,
		},
		{
			name: "Pod Status is PodFailed",
			event: watch.Event{
				Type: watch.Added,
				Object: &corev1.Pod{
					Status: corev1.PodStatus{
						Phase: corev1.PodFailed,

Written by hand.
Test module with a root package added in v1.1.0
and a subpackage added in v1.2.0.

-- .mod --
module example.net/pkgadded

go 1.16
-- .info --
{"Version":"v1.1.0"}
-- go.mod --
module example.net/pkgadded

go 1.16
-- README.txt --
We will add the package example.net/pkgadded/subpkg in v1.2.0.
-- pkgadded.go --
// Package pkgadded was added in v1.1.0.

# - bug-fix -- Used to specify that this change represents a bug fix.
# - security-fix -- Used to specify that this change represents a security fix.
# - feature -- Used to specify a new feature that has been added.
# - test -- Used to describe additional testing added. This file is optional for
#   tests, but included for completeness.
kind: feature

area: traffic-management

# issue is a list of GitHub issues resolved in this note.

# - security-fix -- Used to specify that this change represents a vulnerability fix.
# - feature -- Used to specify a new feature that has been added.
# - test -- Used to describe additional testing added. This file is optional for
#   tests, but included for completeness.
kind: feature

# area describes the area that this change affects.
# Valid values are:
# - traffic-management