[][src]Enum odbc_safe::Return

#[must_use]
pub enum Return<T, E = ()> {
    Success(T),
    Info(T),
    Error(E),
}

Holds result and indicates the overall success or failure of a function.

Variants

Success(T)

The function has been executed successfully. Holds result.

Info(T)

The function has been executed successfully. There have been warnings. Holds result.

Error(E)

An error occured.

Methods

impl<T, E> Return<T, E>[src]

pub fn map<F, U>(self, f: F) -> Return<U, E> where
    F: FnOnce(T) -> U, 
[src]

Maps a Return<T,E> to Return<U,E> by applying a function to a contained Success or Info value, leaving an Error value untouched.

pub fn map_error<F, U>(self, f: F) -> Return<T, U> where
    F: FnOnce(E) -> U, 
[src]

Maps a Return<T,E> to Result<T,U> by applying a function to a contained Error value, leaving a Successor anInfo` value untouched.

pub fn unwrap(self) -> T[src]

Unwraps the result, yielding the content of Success or Info

pub fn success<U>(self) -> Result<T, U> where
    U: From<E>, 
[src]

Transforms the Return<T,E> into a Result<T,U>, mapping Success(v) | Info(v) to Ok(v) and Error(err) to Err(err.into()).

Trait Implementations

impl<S, E> Diagnostics for Return<S, E> where
    S: Diagnostics,
    E: Diagnostics
[src]

impl From<SQLRETURN> for Return<()>[src]

impl<T: Debug, E: Debug> Debug for Return<T, E>[src]

Auto Trait Implementations

impl<T, E> Send for Return<T, E> where
    E: Send,
    T: Send

impl<T, E> Sync for Return<T, E> where
    E: Sync,
    T: Sync

impl<T, E> Unpin for Return<T, E> where
    E: Unpin,
    T: Unpin

impl<T, E> UnwindSafe for Return<T, E> where
    E: UnwindSafe,
    T: UnwindSafe

impl<T, E> RefUnwindSafe for Return<T, E> where
    E: RefUnwindSafe,
    T: RefUnwindSafe

Blanket Implementations

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> From<T> for T[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> Any for T where
    T: 'static + ?Sized
[src]