sort a string

[drug]

01.05.2020 10:38, Chris Katko пишет:
> I'm making anagrams. According to the nextPermutation() docs, I need to 
> 'sort by less' to get all permutations. ... Except the doc page doesn't 
> mention how to do that, nor does std.algorithm.sort show how to sort a 
> string. ... and the google results on the dlang forums from 2017 don't 
> work.
> 
> I've tried .byCodeUnit. , .representation. I've tried sorting on the 
> dchar. I've tried sorting the on string.
> 
> The closest I've gotten:
> 
>      string word = "bar";
>      string line2 = toLower!(string)(word);
>         dchar[] line3 = sort(line2.to!(dchar[]));
> 
> "Error: cannot implicitly convert expression sort(to(line2)) of type 
> SortedRange!(dchar[], "a < b") to dchar[]"
> 

import std;
void main()
{
     string word = "bar";
     dchar[] line3 = word.dup // make a copy to get a range of mutable 
elements
         .map!"dchar(a)" // convert char to dchar
         .array // convert range to random access range (dynamic array 
here) to enable sorting
         .sort  // sort
         .array; // convert SortedRange to dynamic array
     assert(line3 == "abr");
}