I know there are ways to extract C types from NSNumbers and
numerous functions in Math.h for performing calculations but why
doesn't NSNumber support calculations directly?
For example, say you have an NSArray of NSNumbers and you want to
convert them in-place to their nth root. If NSNumber supported math
functions, you could use NSArray's makeObjectsPerformSelector
method to do it without having to loop through each, extract the
value, get the root, and replace the number in the array. That and
the support of arbitrary precision numbers (like gmp or arprec)
could really simplify class definitions, calculations etc.
Apple keeps the internal implementation details to themselves so
I'm sure they could come up with a minimal overhead way to do this
and developers would benefit by never having to write another
conversion function to perform a calculation on a class property or
array of numbers.
Anyone think of a good reason not to do this?
- Ken
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