Struct wpilib::HalMaybe

#[must_use]
pub struct HalMaybe<T> { /* fields omitted */ }

Represents the result of a function call that could error, but even if it does, the result is still usable. Like HalResult<T>, HalMaybe<T> must be used.

Methods

impl<T> HalMaybe<T>

pub fn new(ret: T, err: Option<HalError>) -> HalMaybe<T>

pub fn ok(self) -> T

Ignore the possible error, and consume the HalMaybe into its return value.

pub fn has_err(&self) -> bool

Returns true if there is an error

pub fn err(&self) -> Option<HalError>

Access the potential error.

pub fn into_res(self) -> Result<T, HalError>

Convert the HalMaybe into a Result, discarding the return value if there is an error. This is useful for accessing the many methods on Result, including ? error raising.

Trait Implementations

impl<T> Copy for HalMaybe<T> where     T: Copy,

impl<T> Debug for HalMaybe<T> where     T: Debug,

fn fmt(&self, f: &mut Formatter) -> Result<(), Error>

Formats the value using the given formatter.

impl<T> Clone for HalMaybe<T> where     T: Clone,

fn clone(&self) -> HalMaybe<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.