Exercise 6

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dlorych
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Exercise 6

Beitrag von dlorych » 6. Mär 2019 20:55

Hi,

im a bit confused by the first question in Exercise 6. It references a RCFLAE Interpreter with immediate Substitution and one with cyclic environments. In the Repository are two RCFLAE Interpreters, but as far as i understood they are basically the same, just using two different data structures to represent cyclic environments.
So where is the RCFLAE Interpreter with immediate Substitution? Also, as far as i understood, Recursion is not possible without cyclic environments?

Greetings and thanks!

mirko-koehler
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Re: Exercise 6

Beitrag von mirko-koehler » 7. Mär 2019 10:40

I appended a link for the RCFLAE interpreter with cyclic environments [1] and immediate substitution [2].
Also, as far as i understood, Recursion is not possible without cyclic environments?
We saw multiple ways to implement recursion. For example, we implmented recrsion with fix-point combinators (in an interpreter without environments) in Exercise 5.



[1] https://repository.st.informatik.tu-dar ... erp.scala
[2] https://repository.st.informatik.tu-dar ... terp.scala

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