Re: sort a string

[drug via Digitalmars-d-learn]

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");
}