Hands-On Design Patterns and Best Practices with Julia

Reviewing the rules for automatic conversion

As data type conversion is a fairly standard operation, Julia is designed to automatically call the convert function in the following scenarios:

1. Assigning a value to an array converts the value to the array's element type.
2. Assigning a value to a field of an object converts the value to the declared type of the field.
3. Constructing an object with new converts the value to the object's declared field type.
4. Assigning a value to a variable with a declared type converts the value to that type
5. A function with a declared return type converts its return value to that type.
6. Passing a value to ccall converts the value to the corresponding argument type.

Let's confirm that these are indeed working as advertised. ...