Function rustpython_vm::compiler::parser::ast::fold::fold_pattern_match_singleton

pub fn fold_pattern_match_singleton<U, F>(
    folder: &mut F,
    node: PatternMatchSingleton<U>
) -> Result<PatternMatchSingleton<<F as Fold<U>>::TargetU>, <F as Fold<U>>::Error>where
    F: Fold<U> + ?Sized,