 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
• |
Many languages
support multiple,
|
|
|
simultaneously-active,
environments
|
|
|
|
– |
Each Java class
introduces an environment
|
|
|
|
– |
Each Ada package
also
|
|
|
|
– |
… and also each
function and its parameters
|
|
• |
in Tiger
|
|
|
|
– |
Environment for
variables and functions
|
|
|
|
– |
Environment for
type names
|
|