Returns a Double number value from the given {0}. If the given {0} is null , Double.From returns null . If the given {0} ...

Returns a Double number value from the given {0}. If the given {0} is null, Double.From returns null.  If the given {0} is number within the range of Double, {0} is returned, otherwise an error is returned. If the given {0} is of any other type, see Number.FromText for converting it to number value, then the previous statement about converting number value to Double number value applies.