Re: Converting uint[] slice to string for the purpose of hashing?
On Thursday, 23 July 2015 at 11:49:05 UTC, cym13 wrote:
On Thursday, 23 July 2015 at 11:15:46 UTC, Enjoys Math wrote:
1. Is the best way to hash a uint[] slice
2. How do you do it?
IIRC, std.digest functions take ubyte[] as input, so to hash a
uint[] I would do the following:
void main(string[] args)
{
import std.conv;
import std.digest.md;
int[] a = [1, 2, 3, 4, 5];
auto md5 = new MD5Digest();
md5.put(a.to!(ubyte[]));
auto hash = md5.finish();
writeln(hash);
}
Thanks. That worked. Here's my code:
module hashtools;
import std.conv;
import std.digest.md;
string uintSliceToHash(const uint[] slice) {
auto md5 = new MD5Digest();
md5.put(slice.to!(ubyte[]));
return md5.finish().to!(string);
}
unittest {
import std.stdio;
uint[] slice = [1,2,3,4];
writeln(uintSliceToHash(slice));
}
Re: Converting uint[] slice to string for the purpose of hashing?
On Thursday, 23 July 2015 at 12:10:04 UTC, Enjoys Math wrote:
On Thursday, 23 July 2015 at 11:49:05 UTC, cym13 wrote:
[...]
Thanks. That worked. Here's my code:
module hashtools;
import std.conv;
import std.digest.md;
string uintSliceToHash(const uint[] slice) {
auto md5 = new MD5Digest();
md5.put(slice.to!(ubyte[]));
return md5.finish().to!(string);
}
unittest {
import std.stdio;
uint[] slice = [1,2,3,4];
writeln(uintSliceToHash(slice));
}
Actually, uint[] seems to be hashable:
import std.stdio;
int[uint[]] aa;
aa[[1,2,3]] = 5;
writeln(aa[[1,2,3]]);
WORKS
Converting uint[] slice to string for the purpose of hashing?
1. Is the best way to hash a uint[] slice 2. How do you do it?
Re: Converting uint[] slice to string for the purpose of hashing?
On Thursday, 23 July 2015 at 11:15:46 UTC, Enjoys Math wrote:
1. Is the best way to hash a uint[] slice
2. How do you do it?
IIRC, std.digest functions take ubyte[] as input, so to hash a
uint[] I would do the following:
void main(string[] args)
{
import std.conv;
import std.digest.md;
int[] a = [1, 2, 3, 4, 5];
auto md5 = new MD5Digest();
md5.put(a.to!(ubyte[]));
auto hash = md5.finish();
writeln(hash);
}
Re: Converting uint[] slice to string for the purpose of hashing?
All types are hashable and for your own structs and classes you can redefine opHash
Re: Converting uint[] slice to string for the purpose of hashing?
On Thursday, July 23, 2015 12:56:13 Temtaime via Digitalmars-d-learn wrote: All types are hashable and for your own structs and classes you can redefine opHash It's toHash, actually, but yeah. - Jonathan M Davis
