Static and dynamic type systems have well-known strengths and weaknesses. In previous
work we developed a gradual type system for a functional calculus named λ^?_→. Gradual …

Reasoning about the use of external resources is an important aspect of many practical
applications. Effect systems enable tracking such information in types, but at the cost of …

WebAssembly (Wasm) is a low-level portable code format offering near native performance.
It is intended as a compilation target for a wide variety of source languages. However, Wasm …

The racket library combines racket/base, racket/bool, racket/bytes, racket/class,
racket/cmdline, racket/contract, racket/dict, racket/file, racket/function, racket/future …

Effect handlers have recently gained popularity amongst programming language
researchers. Existing type-and effect systems for effect handlers are often complicated and …

Algebraic effect handlers offer a unified approach to expressing control-flow transfer idioms
such as exceptions, iteration, and async/await. Unfortunately, previous attempts to make …

There has already been considerable research on constructing modular, monad-based
specifications of computational effects (state, exceptions, nondeterminism, etc.) in …

We introduce the type theory λμv, a call-by-value variant of Parigot's λμ-calculus, as a Curry-
Howard representation theory of classical propositional proofs. The associated rewrite …

We introduce Perceus, an algorithm for precise reference counting with reuse and
specialization. Starting from a functional core language with explicit control-flow, Perceus …

Two general techniques for implementing a domain-specific language (DSL) with less
overhead are the finally-tagless embedding of object programs and the direct-style …