Dynamic typing: syntax and proof theory

Even when programming in a statically typed language we every now and then encounter statically untypable values; such values result from interpreting values or from communicating with the outside world. To cope with this problem most languages include ...

Even when programming in a statically typed language we every now and then encounter statically untypable values; such values result from interpreting values or from communicating with the outside world. To cope with this problem most languages include ...

Dynamic typing in a statically typed functional language allows us to defer type unification until run time. This is typically useful when interacting with the 'outside' world where the type of values involved may not be known statically. Haskell has ...