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Eliminating Clutter - Branches

Module by: Charles Severance, Kevin Dowd. E-mail the authors

People sometimes take a week to make a decision, so we can’t fault a computer if it takes a few tens of nanoseconds. However, if an if-statement appears in some heavily traveled section of the code, you might get tired of the delay. There are two basic approaches to reducing the impact of branches:

  • Streamline them.
  • Move them out to the computational suburbs. Particularly, get them out of loops.

In (Reference) we show you some easy ways to reorganize conditionals so they execute more quickly.

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Definition of a lens

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