Hands-On Design Patterns and Best Practices with Julia

Working with the constraints of shared arrays

Elements in a SharedArray must be bits type. What does that mean? The formal definition of bits type can be summarized as follows:

• The type is immutable.
• The type contains only primitive types or other bits types.

The following OrderItem type is a bits type because all fields are primitive types:

struct OrderItem    order_id::Int    item_id::Int    price::Float64    quantity::Intend

The following Customer type is not a bits type because it contains a reference to String, which is neither a primitive type nor a bits type:

struct Customer    name::String    age::Intend

Let's try to create SharedArray for a bits type. The following code confirms that it works properly:

If we try to create SharedArray with a non-bits ...