On 2014-05-22, Chris Angelico wrote:
> On Thu, May 22, 2014 at 11:54 PM, Adam Funk <a24...@ducksburg.com> wrote:
>> That ties in with a related question I've been wondering about lately
>> (using MD5s & SHAs for other things) --- getting a hash value (which
>> is internally numeric, rather than string, right?) out as a hex string
>> & then converting that to an int looks inefficient to me --- is there
>> any better way to get an int? (I haven't seen any other way in the
>> API.)
>
> I don't know that there is, at least not with hashlib. You might be
> able to use digest() followed by the struct module, but it's no less
> convoluted. It's the same in several other languages' hashing
> functions; the result is a string, not an integer.
Well, J*v* returns a byte array, so I used to do this:
digester = MessageDigest.getInstance("MD5");
...
digester.reset();
byte[] digest = digester.digest(bytes);
return new BigInteger(+1, digest);
I dunno why language designers don't make it easy to get a single big
number directly out of these things.
I just had a look at the struct module's fearsome documentation &
think it would present a good shoot(self, foot) opportunity.
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