Orkuncakilkaya
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property Pool<T> { ... }, function first<T>(xs: []T) -> T, map<T, U> over fn
types; a type writes an instance as Pool<Thing>, nested as deep as needed. The
parser names an instance Pool$Thing and remembers its generic and arguments; the
checker takes the generic declarations out, infers a call's type arguments from
its arguments or its result's declared slot, and makes each instance once as an
ordinary record or function, checked like any other. Errors print Pool<Thing>.
An instance keeps its generic's module and export (L3). ludic-fmt keeps type
arguments together while spacing comparisons and shifts.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
8 lines
188 B
Text
8 lines
188 B
Text
# L5: a generic takes as many type arguments as it has parameters
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program GenericArity {
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property Pool<T> { n: int = 0 }
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entry {
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let p = new Pool<int, string>
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print(p.n)
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}
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}
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