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This gist belongs to Clean Code Cookbook http://cleancodecookbook.com By Maximiliano Contieri http://maximilianocontieri.com
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| let features: Vec<Feature> = load_features_from_db(); | |
| let max = 200; | |
| assert!(features.len() <= max); | |
| # This magic number assumption | |
| # is actually wrong | |
| for f in features { | |
| proxy.add_bot_feature(f.unwrap()); | |
| # You also call unwrap() on every feature. | |
| # If the database returns an invalid entry | |
| # or a parsing error, | |
| # you trigger another panic. | |
| # You give your runtime no chance to recover. | |
| # You force a crash on a single bad element. | |
| } | |
| # A quiet config expansion turns into | |
| # a full service outage | |
| # because you trust input that you should validate | |
| # and you use failure primitives (assert!, unwrap()) | |
| # that kills your program | |
| # instead of guiding it to safety |
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