klyn.collections.ArrayListSync.operator+=
method
public native operator+=(values as IList<T>) as Void
Description

Appends every element from a read-only list.

Equivalent to addAll(values).

data = s:[10]
data += s:[20, 30]
print(data)  # s:[10, 20, 30]
Parameters
ParameterDescription
valuesElements appended in iteration order.