>>I have an array which contains the name of some fields in my table. From that array, I would like to extract the type of the field. Is there a way to do that from the array?
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>If its an array created with Afields() then the column 2 has the data type of the table column. Otherwise, you could use the TYPE() function (if the table is open.
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>? type(MyArray[1]) && returns evaluation of the data stored in the field name stored in the table

As mentioned in the other reply, that returns N even if the type is I.