pub fn cu(&self, idx: usize) -> Option<&str> {
        self.nodes
            .get(idx)
            .and_then(|e| self.cus.get(e.cu))
            .and_then(CompilationUnit::to_str)
    }
/// Returns the CU for a meta node
Returns the CU for a meta node
Returns the CU for a meta node
pub fn cu(&self, idx: usize) -> Option<&str> {
        self.nodes
            .get(idx)
            .and_then(|e| self.cus.get(e.cu))
            .and_then(CompilationUnit::to_str)
    }
pub fn cu ( & self , idx : usize ) -> Option < & str > { self . nodes . get ( idx ) . and_then ( | e | self . cus . get ( e . cu ) ) . and_then ( CompilationUnit :: to_str ) }
Returns the CU for a meta node
Returns the CU for a meta node
&self
idx
usize
&self
idx
usize