Function flatten_error 

pub fn flatten_error(error: &VldError) -> FlatError

Flatten a VldError into a simple field-based structure.

Example

use vld::format::flatten_error;
use vld::error::VldError;

let err = VldError::new(); // empty for demo
let flat = flatten_error(&err);
assert!(flat.form_errors.is_empty());