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Concept

Kind (type theory)

Related publications (9)

Higher-Order Subtyping with Type Intervals

Sandro Stucki

Modern, statically typed programming languages provide various abstraction facilities at both the term- and type-level. Common abstraction mechanisms for types include parametric polymorphism -- a hallmark of functional languages -- and subtyping -- which ...

EPFL2017

Implementing Higher-Kinded Types in Dotty

Martin Odersky, Dmytro Petrashko, Guillaume André Fradji Martres

dotty is a new, experimental Scala compiler based on DOT, the calculus of Dependent Object Types. Higher-kinded types are a natural extension of first-order lambda calculus, and have been a core construct of Haskell and Scala. As long as such types are jus ...

ACM2016

Java and Scala's Type Systems are Unsound The Existential Crisis of Null Pointers

Nada Amin

We present short programs that demonstrate the unsoundness of Java and Scala's current type systems. In particular, these programs provide parametrically polymorphic functions that can turn any type into any type without (down) casting. Fortunately, parame ...

Assoc Computing Machinery2016

SMT-Based Checking of Predicate-Qualified Types for Scala

Viktor Kuncak, Georg Stefan Schmid

We present qualified types for Scala, a form of refinement types adapted to the Scala language. Qualified types allow users to refine base types and classes using predicate expressions. We implemented a type checker for qualified types that is embedded in ...

Assoc Computing Machinery2016

Search Techniques for Code Generation

Tihomir Gvero

This dissertation explores techniques that synthesize and generate program fragments and test inputs. The main goal of these techniques is to improve and support automation in program synthesis and test input generation. This is important because performin ...

EPFL2015

Java and Scala's Type Systems are Unsound: The Existential Crisis of Null Pointers

Nada Amin

We present short programs that demonstrate the unsoundness of Java and Scala’s current type systems. In particular, these programs provide parametrically polymorphic functions that can turn any type into any type without (down)casting. Fortunately, paramet ...

2015

Phantm: PHP analyzer for type mismatch

Viktor Kuncak, Philippe Paul Henri Suter, Etienne Kneuss

We present Phantm, a static analyzer that uses a flow-sensitive analysis to detect type errors in PHP applications. Phantm can infer types for nested arrays, and can leverage runtime information and procedure summaries for more precise results. Phantm foun ...

2010

Improving API Documentation for Java-like Languages

Gilles Dubochet

The Javadoc paradigm for displaying API documentation to users is quite popular, with similar variants existing for many mainstream languages. However, two user interface design properties of Javadoc may reduce its utility when displaying documentation for ...

2010

Generics of a Higher Kind

Martin Odersky

With Java 5 and C-# 2.0, first-order parametric polymorphism was introduced in mainstream object-oriented programming languages under the name of generics. Although the first- order variant of generics is very useful, it also imposes some restrictions: it ...

2008

Related publications (9)