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Not An Insider (Just Lucky)

This is a submission for the MLH x DEV Writing Challenge What I Built What if the person betting on an outcome is also the person who can influence it?

  • "Not An Insider (Just Lucky)" is a prediction-market prototype
  • System checks trader identities and affiliations before trades
  • Interface explains trade block reasons instead of generic errors

Debugging a Compound Interest Calculation: A Coder's Field Guide to Finding the Off-by-One-Period Bug

Every team I have worked on has eventually shipped a finance feature that involved projecting a balance forward in time. Every single one of those features also produced, at some point, an answer that…

  • Off-by-one-period bug common in compounding interest code
  • Implementation pitfalls include APY-as-APR misrepresentation
  • Addressing factors ensures accurate savings projections in software

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