value-of an interpreter for lambda-calculus expressions

Questions

• Homework coming due soon. Yeah?
• Great questions! Keep up the good and awesomeness!
• Debugging help.

Review

• match
• our three lines

The interpreter

This is today's big idea. One of the questions we can ask about these lambda-calculus expressions is: what is the value? And its the same pattern as writing any other program over lambda-calculus expressions.

We will add some forms beyond just our 3 lines, but we don't have to. And you could add more if you wanted, too!