value restriction
nounDefinitions
In a functional language, inference of a polymorphic type only for syntactic values…
In a functional language, inference of a polymorphic type only for syntactic values (values that can be evaluated at compile time) to ensure that a program is type-safe.
- A typical example is an expression returning always the empty list. It should be given the polymorphic type α list, but this is not possible under the value restriction if the expression has to be evaluated.
- It has been found empirically that eta expansion usually suffices for dealing with the value restriction.
The neighborhood
Vish — recursive loop
No curated loop yet for value restriction. Loops are being traced one word at a time while the ingestion pipeline matures.
sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA