[isabelle-dev] Constructing types from strings

[munddr at gmail.com]

Hello all,

Is there a way to create a type out of a string? I know there's the  
antiquotation @{type...}, but if the string was stored as a value, eg, val  
str = "nat => nat", @{type str} doesn't seem to work.

Any help will be appreciated. Thanks.

- John
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