pub fn is_integer(&self) -> bool {
        match self.value {
            LitExprValue::Integer(..) => true,
            _ => false,
        }
    }
/// Check if this is an integer literal.
Check if this is an integer literal.
Check if this is an integer literal .
pub fn is_integer(&self) -> bool {
        match self.value {
            LitExprValue::Integer(..) => true,
            _ => false,
        }
    }
pub fn is_integer ( & self ) -> bool { match self . value { LitExprValue :: Integer ( .. ) => true , _ => false , } }
Check if this is an integer literal.
Check if this is an integer literal .
&self
&self