Trait OpError
err_tools
pub trait OpError: Sized { type V; pub fn op_err(self) -> Option<Self::V>; pub fn e_str(self, s: &'static str) -> Result<Self::V> { ... } pub fn e_string(self, s: String) -> Result<Self::V> { ... } }
type V
pub fn op_err(self) -> Option<Self::V>
pub fn e_str(self, s: &'static str) -> Result<Self::V>
pub fn e_string(self, s: String) -> Result<Self::V>
impl<V> OpError for Option<V>
type V = V
pub fn op_err(self) -> Self