Struct EAccumScope 

pub struct EAccumScope<'a> { /* private fields */ }

Error scope to fail if one of several computations failed.

Usage example:

for e in &es {
    foo(acc, e)?;
}

will only try to execute foo until it reaches the first error. Subsequent elements will not be handled.

If instead we wish to execute them all we can do

Implementations

impl<'a> EAccumScope<'a>

pub fn compute<F>(&mut self, f: F)

where F: FnOnce(&mut EAccum) -> Option<()>,

Record the success of a new computation.

pub fn close(self) -> Option<()>

Consume the scope and emit an error if and only if one of the recorded computations failed.

pub fn error<E: IntoError>(&mut self, e: E)

Apply an error to the inner accumulator.

pub fn warning<E: IntoError>(&mut self, e: E)

Apply a warning to the inner accumulator.