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Questions related to design, implementation, and analysis of programming languages. NOT for questions about how to program, which are off-topic on this site.

1 vote
2 answers
230 views

Example of progress and preservation failing in a commonly used programming language like Java

I am wondering if my solution is correct or I am on the right track. I have searched online and found a paper about Java type system being unsound but that doesn't really answer the progress and prese …
Node.JS's user avatar
  • 151
1 vote
1 answer
37 views

Example of preservation failing in Java - follow up question

This is a follow-up question to my previous question I have been reading this post and it comes up with the following example showing how Java type system is unsound: interface IFoo<T> { Number fo …
Node.JS's user avatar
  • 151