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constructs an integer from the list of its decimal digits.
FromDigits[list, b]
takes the digits to be given in base b.
constructs an integer from a string of digits.
FromDigits["string", "Roman"]
constructs an integer from Roman numerals.
  • The digits in list and the base b need not be positive integers, and can be any expression.  »
  • If Indeterminate appears in list, it is assumed to signify unknown digits beyond the precision of an approximate real number.  »
  • FromDigits["string", b] takes the digits in "string" to be given in base b.
  • In FromDigits["string", b], digits above 9 can be represented by letters a-z or A-Z.
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