Struct specs::common::Errors

pub struct Errors { /* fields omitted */ }

A resource you can use to store errors that occurred outside of the ECS but were catched inside, therefore should be handled by the user.

Methods

impl Errors

pub fn new() -> Self

Creates a new instance of Errors.

pub fn add(&self, error: BoxedErr)

Add an error to the error collection.

pub fn execute<E, F>(&self, f: F) where     E: Error + Send + Sync + 'static,     F: FnOnce() -> Result<(), E>,

A convenience method which allows nicer error handling.

Examples

errors.execute::<Error, _>(|| {
    let y = do_something()?;
    println!("{}", y + 5);

    Ok(())
});

So the closure you pass to this method is essentially an environment where you can use ? for error handling.

pub fn has_error(&self) -> bool

Checks if the queue contains at least one error.

pub fn pop_err(&mut self) -> Option<BoxedErr>

Removes the first error from the queue.

Important traits for DrainErrors<'a>

impl<'a> Iterator for DrainErrors<'a> type Item = BoxedErr;

pub fn drain(&mut self) -> DrainErrors

Returns a draining iterator, removing elements on each call to Iterator::next.

Important traits for Vec<u8>

impl Write for Vec<u8>

pub fn collect(&mut self) -> Vec<BoxedErr>

Collect all errors into a Vec.

pub fn print_and_exit(&mut self)

Prints all errors and exits in case there's been an error. Useful for debugging.

Trait Implementations

impl Debug for Errors

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

Formats the value using the given formatter.

impl Default for Errors

fn default() -> Self

Returns the "default value" for a type.