[Fix][Cross-Platform] Replace <types.h> with <cstddef> and remove explicit const from std::map key for macOS

[idesign0]

Description

This PR fixes a compilation issue on macOS caused by the use of const std::pair<std::string, std::string> as the key type in a std::map.

Details:

• The original code used const std::pair as the key type:

using DistanceMap = std::map<const std::pair<std::string, std::string>, std::vector<DistanceResultsData>>;

• This caused assignment errors because std::map already treats keys as const internally.
• Explicitly adding const leads to conflicts with internal map operations and strict compiler checks.
• The fix removes the explicit const qualifier from the key type:

using DistanceMap = std::map<std::pair<std::string, std::string>, std::vector<DistanceResultsData>>;

• This change ensures compatibility across platforms, including macOS, and adheres to the C++ standard container usage best practices.

[Fix] Use cross-platform <cstddef> instead of <types.h>

Description

Replaces the non-standard <types.h> header with the standard <cstddef> to ensure size_t is available on all platforms. This fixes compilation issues on macOS while remaining compatible with Linux and other platforms.

Changes

- #include <types.h>
+ #include <cstddef>  // for size_t, cross-platform

[forrest-rm]

Looks simple enough

[idesign0]

Looks simple enough
can you push it further? :)

[github-actions]

This PR is stale because it has been open for 45 days with no activity. Please tag a maintainer for help on completing this PR, or close it if you think it has become obsolete.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 46.22%. Comparing base (f6acd91) to head (a2e8c3e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3548      +/-   ##
==========================================
+ Coverage   46.17%   46.22%   +0.06%     
==========================================
  Files         720      720              
  Lines       59179    59175       -4     
  Branches     7595     7596       +1     
==========================================
+ Hits        27320    27348      +28     
+ Misses      31692    31660      -32     
  Partials      167      167              

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