Crate app_error 

App errors

This crate provides an error type, AppError, that is intended for usage in applications.

It is Send, Sync, 'static, and, importantly, cheaply Clone-able.

To achieve this, it serializes every error it receives without owning it, meaning that you also can’t retrieve the error later by downcasting it.

It is also able to store multiple errors at once and provide pretty-printing of all of these them.

It can carry an optional data parameter that may be retrieved later on.

The inner representation is similar to AppError = (String, Option<AppError>) | Vec<AppError>.

Macros

app_error

A macro that formats and creates an AppError

bail

A macro that returns an error

ensure

A macro that returns an error if a condition is false

Structs

AppError

A reference-counted untyped error that can be created from any error type.

DataIter

Data iterator

PrettyDisplay

Pretty display for AppError

Enums

AllErrs

Helper type to collect a IntoIter<Item = Result<T, AppError>> into a Result<C, AppError> with all of the errors instead of the first.

Traits

Context

Context for Result-like types