Which of the following statements about Scheme is correct?
A) Scheme function applications use pass by value, while special forms in Scheme use delayed evaluation.
B) Scheme function applications use pass by name, while special forms in Scheme use delayed evaluation.
C) Scheme special forms use pass by value, while function applications in Scheme use delayed evaluation.
D) Scheme special forms use pass by value, while function applications in Scheme use delayed evaluation

Question

Quizplus · Accepted Answer

Scheme function applications indeed use pass by value (also known as applicative order evaluation), where the arguments to functions are evaluated before the function is applied. Special forms in Scheme, such as if or define, use delayed evaluation (also known as normal order evaluation) where the evaluation of arguments is delayed until their values are actually needed. This allows for constructs like conditional expressions to work without evaluating all branches.

Which of the Following Statements About Scheme Is Correct