At one extreme, they're too complex for introductory programming courses. At the other extreme, these languages have inherent ambiguities that make them difficult to optimize, and hence inappropriate for many large, performance-critical programming projects. A poorly chosen introductory programming language adds the lack of compile-time error checking to this overwhelming list. F, the programming language we discuss in this article, addresses such issues. It is a safe and portable programming language.
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Students, however, need to be told whenever possible about errors during compile time. F, Pascal, and many other languages help students with this confusion between assignment and comparison by issuing a compiler-error message. All module entities are either public or private. All subroutine arguments must be declared as intent. Instead, the end of the line serves as the end of the statement.