Show HN: Fuse – statically typed functional programming language
fuseFuse is a statically typed, purely functional language with higher-kinded types and ad-hoc polymorphism. Algebraic data types, generics, and traits give you powerful tools to model your domain.Purely functionalEvery function in Fuse is a pure function. Pattern matching, higher-order functions, and do notation let you write expressive, composable code.Type inferenceBidirectional type checking with support for higher-order types.
- ▪fuseFuse is a statically typed, purely functional language with higher-kinded types and ad-hoc polymorphism.
- ▪Algebraic data types, generics, and traits give you powerful tools to model your domain.Purely functionalEvery function in Fuse is a pure function.
- ▪Pattern matching, higher-order functions, and do notation let you write expressive, composable code.Type inferenceBidirectional type checking with support for higher-order types.
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Record
| Original publisher | Fuse Programming Language |
| Canonical URL | https://fuselang.org |
| Publication time | Sun, 02 Aug 2026 11:23:56 +0000 |
| Retrieval time | 2026-08-02T13:05:40.638Z |
| Last seen | 2026-08-02T13:05:40.638Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | iYp-SeJfrBQU · 1 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
fuseFuse is a statically typed, purely functional language with higher-kinded types and ad-hoc polymorphism. It compiles to the GRIN whole-program optimizer, producing LLVM-generated native code.Overview Get Startedtrait Functor[A]: fun map[B](self, f: A -> B) -> Self[B]; impl List[A]: fun fold[A, B](l: List[A], z: B, f: (B, A) -> B) -> B match l: Cons(h, t) => List::fold(t, f(z, h), f) Nil => z fun sum(l: List[i32]) -> i32 List::fold(l, 0, (a, b) => a + b) impl Functor[A] for List[A]: fun map[B](self, f: A -> B) -> List[B] List::fold(self, Nil[B], (t, h) => Cons(f(h), t)) fun fmap[A, B, F: Functor](f: A -> B, x: F[A]) -> F[B] x.map(f) fun main() -> IO[Unit] let l = Cons(1, Cons(2, Cons(3, Nil))) let l2 = fmap(x => x * 2, l) print(int_to_str(List::sum(l2)))FeaturesStatically typedType…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Fuse Programming Language.
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