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Go Bitwise Flags and Bitmasks: Configuration Pattern Guide

TL;DR AI

Key summary

2 min read
  1. ConfigFlags is an int type used for configuration flags.

  2. iota can automatically generate bit positions in a constant block.

  3. Example flags include EnableCompression = 1 << iota, SkipValidation = 2, and LogQueries = 4.

  4. OR combines flags, AND checks them, XOR toggles them, and &^ clears them.

  5. Another example uses 1, 2, 4, and 8 for DumpHeaders, DumpBodies, DumpRequests, and DumpResponses; Red is 0b00000001.

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