allow nested combinations of (named)tuples, symbols, and bits as type parameters #46300
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vtjnash
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JeffBezanson
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Currently values can be used as type parameters if they are isbits, or tuples of bits and symbols. That is a bit arbitrary, and it seems to me we might as well allow (at least) trees of tuples and named tuples with bits and symbol leaves. Essentially, symbols count as "isbits" for use as type parameters, so to generalize we could allow anything of that form.