Function of operators in question:

• Slice in list context returns the specified elements.
• Slice in scalar context returns the last of the specified element.
• List assignment in list context returns its LHS.
• List assignment in scalar context returns the number of elements assigned.
• Scalar assignment in any context returns its LHS.

Applying precedence and associativity, we get:

1. Right-most slice (in list context) returns the specified elements.
2. Left-most slice (in list context) returns the specified elements.
3. List assignment (in scalar context) returns the number of elements assigned.
4. Scalar assignment (in list context) returns its LHS.