Hard Coded Validation
Hard coded validation is a software development practice where validation rules, such as input checks or business logic constraints, are directly embedded into the source code as fixed values or conditions. This approach involves writing explicit, static validation logic that cannot be easily changed without modifying and redeploying the code. It is commonly used for simple, unchanging requirements but is considered inflexible and prone to maintenance issues.
Developers should use hard coded validation for straightforward, static validation needs where rules are unlikely to change, such as validating a fixed-length password or a specific numeric range in a small, standalone application. It is suitable for rapid prototyping or when external configuration is unnecessary, but it should be avoided in larger systems where validation rules might evolve, as it leads to code rigidity and increased maintenance costs.