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Explain fold_list

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This commit is contained in:
Markus Westerlind 2020-01-13 09:17:10 +01:00
parent 898ed636a3
commit a1586f1d2b
1 changed files with 5 additions and 0 deletions
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5
src/librustc/ty/structural_impls.rs
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@ -1061,6 +1061,11 @@ impl<'tcx> TypeFoldable<'tcx> for InferConst<'tcx> {
}
}
// Does the equivalent of
// ```
// let v = self.iter().map(|p| p.fold_with(folder)).collect::<SmallVec<[_; 8]>>();
// folder.tcx().intern_*(&v)
// ```
fn fold_list<'tcx, F, T>(
list: &'tcx ty::List<T>,
folder: &mut F,