`@lru_cache` modifies the function it decorates to return the same value that was returned the first time, instead of computing it again, executing the code of the function every time.

	}

	switch funcName {
	case aggFnCount:
		// For all non-null values, the count is incremented.
		e.aggregate.runningCount++

	case aggFnAvg, aggFnSum:
		e.aggregate.runningCount++
		// Convert to float.
		f, ok := argVal.ToFloat()
		if !ok {
			return fmt.Errorf("Could not convert value %v (%s) to a number", argVal.value, argVal.GetTypeString())
		}
		argVal.setFloat(f)

		if string(found) == key {
			vals = append(vals, value)
			plSize += len(value)
			replaced = true
		} else {
			vals = append(vals, foundVal)
			plSize += len(foundVal)
		}
	}

	// Add one more.
	if !replaced {
		keys = append(keys, []byte(key))
		vals = append(vals, value)
		plSize += len(key) + len(value) + msgp.StringPrefixSize + msgp.ArrayHeaderSize
	}

	// Reserialize...

// Trivial collisions are avoided, but this is by no means a strong hash.
func hashDeterministicString(m map[string]string) uint64 {
	// Seed (random)
	crc := uint64(0xc2b40bbac11a7295)
	// Xor each value to make order independent
	for k, v := range m {
		// Separate key and value with an individual xor with a random number.
		// Add values of each, so they cannot be trivially collided.

in an unspecified order.
This means that races on multiword data structures
can lead to inconsistent values not corresponding to a single write.
When the values depend on the consistency
of internal (pointer, length) or (pointer, type) pairs,
as can be the case for interface values, maps,
slices, and strings in most Go implementations,
such races can in turn lead to arbitrary memory corruption.
</p>

<p>

		}
		res[i] = *v
	}
	return FromArray(res), nil
}

const floatCmpTolerance = 0.000001

func (e *In) evalInNode(r Record, lhs *Value, tableAlias string) (*Value, error) {
	// Compare two values in terms of in-ness.
	var cmp func(a, b Value) bool
	cmp = func(a, b Value) bool {
		// Convert if needed.
		inferTypesForCmp(&a, &b)

		if a.Equals(b) {
			return true
		}

		// If elements, compare each.

		i += size
	}
	if start < len(s) {
		dst.WriteString(s[start:])
	}
}

// htmlSafeSet holds the value true if the ASCII character with the given
// array position can be safely represented inside a JSON string, embedded
// inside of HTML <script> tags, without any additional escaping.
//
// All values are true except for the ASCII control characters (0-31), the

        for (ConsoleIcon icon : ConsoleIcon.values()) {
            String result = icon.getIcon(null);
            assertNotNull(result, "Icon result should not be null for " + icon);

            // Result should be either Unicode or ASCII fallback depending on default charset
            String expectedUnicode = String.valueOf(icon.getUnicodeChar());
            String expectedAscii = icon.getAsciiFallback();

    public static final String SELF_COMBINATION_MODE_ATTRIBUTE = "combine.self";
    /** Value indicating the element should be completely overridden */
    public static final String SELF_COMBINATION_OVERRIDE = "override";
    /** Value indicating the element should be merged */
    public static final String SELF_COMBINATION_MERGE = "merge";
    /** Value indicating the element should be removed */

We can **update a hero**. For this we use an HTTP `PATCH` operation.

And in the code, we get a `dict` with all the data sent by the client, **only the data sent by the client**, excluding any values that would be there just for being the default values. To do it we use `exclude_unset=True`. This is the main trick. 🪄

Then we use `hero_db.sqlmodel_update(hero_data)` to update the `hero_db` with the data from `hero_data`.