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Some features of the Transfer language:
* Purely functional
* Dependent types
* Eager evaluation
* Generalized algebraic datatypes
* Metavariables
* Records with subtyping
* Overloading by explicit dictionary passing
* Pattern matching by case expressions
Additional features in the front-end language:
* Disjunctive patterns
* do-notation
* Automatic derivation of some operations on user-defined GADTs:
- Compositional maps and folds
- Equality
- Ordering
- Showing
* Pattern equations
* Operator syntax for common functions, most are overloaded
Differences between Transfer and Cayenne:
* Cayenne has a more advanced module system
* Cayenne has mutually recursive record fields
* Cayenne erases type arguments before running
* Transfer is eager, Cayenne is lazy
* Transfer has GADTs (inductive families)
* Transfer has metavariables
* Transfer has record patterns
* Transfer has disjunctive patterns
* Transfer has derivation of compositional functions
* Transfer has a standard library which uses a hierarchy
of "type classes"
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