= Initializer Lists Initializer lists can be used to construct or assign a <<ref_value>>:

Simple initializer lists produce an <<ref_array>>:

When a two element initializer list is nested within an enclosing initializer list, it is unclear whether it represents an <<ref_array>> or an <<ref_object>>:

Initializer lists can be used to unambiguously construct or assign an <<ref_object>> or <<ref_array>>:

Similarly, an initializer list for an <<ref_object>> is always interpreted as an <<ref_object>>. In such cases, the initializer list must be a list of key-value pairs. For example, the following code will not compile because `1` is not convertible to a string: