Make all fields classes with type

[shuds13]

All fields use classes - with all having a datatype specifiable. Defaults to None.

Targets #40. More complete resolution to #39

Currently takes string for datatype (can add tuple).

• General issue that when constants and objectives become a class then they need an attribute for what was previously the direct storage of that field.
  • This is breaking as it is
  • We could use magic methods to continue to make direct use of the object refer to that attribute (but possible confusion).
• E.g., Objective class - added direction attribute:

    assert vocs.objectives["f"] == "MINIMIZE"
    assert vocs.constants["alpha"] == 1.0

to

    assert vocs.objectives["f"].direction == "MINIMIZE"
    assert vocs.constants["alpha"].value == 1.0

Update: Objectives now use inherited classes.

assert isinstance(vocs.objectives["f"], MinimizeObjective)

• Should dtype be string/tuple (numpy centric) or separate type, size fields?

  • Maybe latter more intuitive if a generators validate_vocs limits values to scalars.

• Should we constrain types for variables for instance - somehow?

• Can we have a ContinuousVariable of integer type or should we have separate IntegerVariable as before.

• If we do like this, we could make constraints just observables with an optional constraint attribute.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5de4498) to head (91c571a).
⚠️ Report is 41 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##              main       #45    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files            5         5            
  Lines          458       563   +105     
==========================================
+ Hits           458       563   +105     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[shuds13]

From meeting:

• Implement Objective types with inheritance - like constraints.

• hold off on arrays

• object.value changes - consider where/how vocs is processed.