In day-to-day development work, not every problem needs a library.
Sometimes the task is small:
- converting a measurement from one unit to another
- double-checking a value in documentation
- validating data coming from an external source
For things like this, pulling in a dependency often feels heavier than the problem itself.
When the logic is straightforward, I usually just want:
- a quick reference
- a sanity check
- something that doesn’t require setup
In those cases, I either do the math manually or quickly confirm it using a simple reference page like
https://mmtocm.net
before moving on.
It’s not about avoiding tools.
It’s about choosing the lightest option that lets you stay focused on the actual task.
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