Reduce verbosity with modern idioms #7

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10 errors and 2 warnings

'result_of_t': is not a member of 'std' [D:\a\chains\chains\build\test\tests.vcxproj]

syntax error: identifier 'result_of_t' [D:\a\chains\chains\build\test\tests.vcxproj]

'future_error': a class or enum cannot be defined in an alias template [D:\a\chains\chains\build\test\tests.vcxproj]

unrecognizable template declaration/definition [D:\a\chains\chains\build\test\tests.vcxproj]

syntax error: '<end Parse>' [D:\a\chains\chains\build\test\tests.vcxproj]

argument list missing after assumed function template 'future' [D:\a\chains\chains\build\test\tests.vcxproj]

argument list missing after assumed function template 'future' [D:\a\chains\chains\build\test\tests.vcxproj]

'_make_exceptional_future': a class or enum cannot be defined in an alias template [D:\a\chains\chains\build\test\tests.vcxproj]

unable to recover from previous error(s); stopping compilation [D:\a\chains\chains\build\test\tests.vcxproj]

Process completed with exit code 1.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/cache@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

Failed to install pipx: Error: Failed to install venv as it was not found via pip or the system package manager. Ignoring...