An Introduction to Object-Oriented Programming
By Timothy Budd
Study Guide for Chapter 4
After reading this chapter, you should be able to:
Describe the message passing mechanisms of several programming languages.
Understand the difference between heap-based and stack-based storage
Understand the difference between explicit dynamic memory recovery and
implicit (garbage collection) memory recovery.
Describe the mechanisms for creation and initialization in several
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In what ways does message passing differ from a procedure call?
What are the three portions of a message passing expression?
In what ways does stack based memory allocation differ from heap based
What is meant by the assertion that in Pascal naming and
allocation of dynamic variables are tied, whereas in C
they are separate.
What does it mean to say a language uses garbage collection to recover
no-longer used dynamically allocated memory?
What are some arguments for and against the use of automatic garbage collection?
How is the lifetime of a value different from the scope of
What does it mean to say a variable is immutable?
Timothy Budd, 1995.