Prevent empty lists being treated as options - Githubissues

maxitg / SetReplace

C++/Wolfram Language package for exploring set and graph rewriting systems

MIT License

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Prevent empty lists being treated as options #553

Closed maxitg closed 3 years ago

maxitg commented 3 years ago

Changes

Closes #551.
Prevents empty lists being treated as options in WolframModelEvolutionObject properties.

Comments

Especially useful for potential properties where {} might be a valid optional argument like #528.

Examples

Empty lists are no longer allowed:

In[] := WolframModel[{{1, 2}} -> {{1, 3}, {1, 3}, {3, 2}}, {{1, 1}}]["FinalState", {}]

Cherry-picking this into #528 now yields the expected result for passing an empty list as an argument:

In[] := WolframModel[{{1, 2}} -> {{1, 3}, {1, 3}, {3, 2}}, {{1, 1}}]["FeatureAssociation", {}]
Out[] = <||>

This change is