github.com/joomcode/Errorx (go): Package errorx provides error implementation and error-related utilities.  Conventional approach towards errors in Go is quite limited. The typical case implies an error being created at some point:  Then being passed along with a no-brainer:  And, finally, handled by printing it to the log file:  This approach is simple, but quite often it is not enough. There is a need to add context information to error, to check or hide its properties. If all else fails, it pays to have a stack trace printed along with error text.  The code above could be modified in this fashion:  Here errorx.Decorate is used to add more information, and syntax like errorx.IsOfType can still be used to check the original error. This error also holds a stack trace captured at the point of creation. With errorx syntax, any of this may be customized: stack trace can be omitted, error type can be hidden. Type can be further customized with Traits, and error with Properties. Package provides utility functions to compose, switch over, check, and ignore errors based on their types and properties.  See documentation for Error, Type and Namespace for more details.
Keywords: error-handling|errors|go|stack-traces