// issue #28164
	// testcase from issue
	_ = interface{}(nil) == [ /* ERROR "slice can only be compared to nil" */ ]int(nil)

	// related cases
	var e interface{}
	var s []int
	var x int
	_ = e == s // ERROR "slice can only be compared to nil"
	_ = s /* ERROR "slice can only be compared to nil" */ == e
	_ = e /* ERROR "operator < not defined on interface" */ < x

            while (true) {
                K previousProperty = previousEntry.getKey();
                K currentProperty = currentEntry.getKey();
                int compared = comparator.compare(previousProperty, currentProperty);
                if (compared < 0) {
                    if (!diffListener.removed(previousProperty)) {
                        return false;
                    }

	_ = b == b
	_ = a /* ERROR "[10]func() cannot be compared" */ == a
	_ = l /* ERROR "slice can only be compared to nil" */ == l
	_ = s /* ERROR "struct containing []byte cannot be compared" */ == s
	_ = p == p
	_ = f /* ERROR "func can only be compared to nil" */ == f
	_ = i == i
	_ = m /* ERROR "map can only be compared to nil" */ == m
	_ = c == c

	_ = b == nil /* ERROR "mismatched types" */

	things []string
}

type thing2 struct {
	things []thing1
}

func _() {
	var a1, b1 thing1
	_ = a1 /* ERROR "struct containing []string cannot be compared" */ == b1

	var a2, b2 thing2
	_ = a2 /* ERROR "struct containing []thing1 cannot be compared" */ == b2

// Values are compared using ==.
func Equal[M1, M2 ~map[K]V, K, V comparable](m1 M1, m2 M2) bool {
	if len(m1) != len(m2) {
		return false
	}
	for k, v1 := range m1 {
		if v2, ok := m2[k]; !ok || v1 != v2 {
			return false
		}
	}
	return true
}

// EqualFunc is like Equal, but compares values using eq.
// Keys are still compared with ==.

	case a: // no follow-on error here
	}

	// this is ok because f can be compared to nil
	var f func()
	switch f {
	}

	switch f {
	case nil:
	}

	switch (func())(nil) {
	case nil:
	}

	switch (func())(nil) {
	case f /* ERRORx `invalid case f in switch on .* \(func can only be compared to nil\)` */ :
	}

	switch nil /* ERROR "use of untyped nil in switch expression" */ {
	}

        }
    }

    static <T> ChildMap<T> childMap(CaseSensitivity caseSensitivity, ChildMap.Entry<T> entry1, ChildMap.Entry<T> entry2) {
        int compared = PathUtil.getPathComparator(caseSensitivity).compare(entry1.getPath(), entry2.getPath());
        List<ChildMap.Entry<T>> sortedEntries = compared < 0
            ? ImmutableList.of(entry1, entry2)
            : ImmutableList.of(entry2, entry1);
        return childMapFromSorted(sortedEntries);

	for key, value := range subset {
		if supersetValue, ok := superset[key]; !ok || supersetValue != value {
			return false
		}
	}
	return true
}

// EqualFunc is like Equal, but compares values using eq.
// Keys are still compared with ==.
func EqualFunc[M1 ~map[K]V1, M2 ~map[K]V2, K comparable, V1, V2 any](m1 M1, m2 M2, eq func(V1, V2) bool) bool {
	return maps.EqualFunc(m1, m2, eq)

 *     <li>Only the parts of a version are compared. The actual separator characters are not significant: `1.a.1 == 1-a+1 == 1.a-1 == 1a1`</li>
 * </ul>
 * </li>
 * <li>The equivalent parts of 2 versions are compared using the following rules:
 * <ul>
 *     <li>If both parts are numeric, the highest numeric value is <b>higher</b>: `1.1 {@literal <} 1.2`</li>

But when checking benchmarks and comparisons you should keep the following in mind.

## Benchmarks and speed

When you check the benchmarks, it is common to see several tools of different types compared as equivalent.

Specifically, to see Uvicorn, Starlette and FastAPI compared together (among many other tools).