the same. A great example would be a math function like. That function should work for every case where you need to calculate a logarithm - each calculation of a log isIf two different projects share the same logic, it can often make sense to centralize it in a library package. While this is often a great idea, it can add overhead and can end up being more trouble than it’s worth.
For example, even if the abstraction makes sense, you’re definitely adding at least the following complexity to the project:Requires multi-project updates in order to get a new change to a specific dependentGets harder to make “breaking” changes to the libraries’ core functions - requires a higher standard of code quality and architectureWhen debugging or reading code, it would be easiest if the flow of logic started at the top of a file and flowed in a linear path.
Pure functions are easy to write good unit tests for - if your abstraction is easily testable it’s more likely to be a good abstraction.Take a look at the following example:This is a great function! It’s very simple, and obviously can be used to calculate the area of any shape. Here’s a bad example:Special cases are bad news - I’m trying to be too abstract.
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