AnySubset

AnySubset[{c₁,c₂,…}]

represents an element in an interpreter or form that accepts any subset of the choices c_i.

AnySubset[{lab₁c₁,lab₂c₂,…}]

accepts any subset of the lab_i, yielding the corresponding c_i as results.

accepts any subset of the entities in the specified entity class.

AnySubset[choices,max]

allows at most max choices to be selected.

AnySubset[choices,{min,max}]

allows at least min and at most max choices to be selected.

Details

Interpreter[AnySubset[{c₁,c₂,…}]][{i₁,i₂,…}] yields a list of those c_k that appear among the i_k.
In a form, AnySubset can be represented by CheckboxBar, TogglerBar, or ListPicker.
When the input does not match the interpreter specification, Interpreter[AnySubset[…]][input] gives a Failure object.

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Use AnySubset to specify a form field where more than one choice can be selected at the same time:

Use AnySubset in Interpreter to validate lists of inputs:

Interpreter will return a Failure object if the list of inputs is incompatible with the choices:

Specify a minimum and maximum number of choices:

AnySubset can be used in FormFunction to generate an appropriate controller:

Specify a TogglerBar:

Specify a ListPicker:

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