Function validation_failure 

pub fn validation_failure<T>(error: AnalysisError) -> AnalysisValidation<T>

Create a failed validation result with a single error.

Example

use debtmap::effects::validation_failure;
use debtmap::errors::AnalysisError;

let v: debtmap::effects::AnalysisValidation<i32> =
    validation_failure(AnalysisError::validation("Invalid input"));
assert!(v.is_failure());