Boostには、multi-indexというスペックがあるらしい。

↓　テンプレートテクニックのポリシーのところを読んでいたら発見した。
https://www.sbcr.jp/product/4797376685/

multi-indexの部分を見てみる。。

35typedef multi_index_container<
36  session,
37    indexed_by<
38      ordered_unique<tag<linenumber>,   member<session, int, &session::linenumber> >,
39      ordered_unique<tag<source_ipaddr>, member<session, std::string, &session::source_ipaddr> >,
40      ordered_unique<tag<dest_ipaddr>, member<session, std::string, &session::dest_ipaddr> >,
41      sequenced<tag<seq> >
42      >
43  > dictionary;

今週、Boost Semantic Actionからマルチマップ(multimap)に値を格納する
https://qiita.com/Ruo_Ando/items/c10cbb551f1ce616d139
を書いたが、semantic actionからmulti-indexへのインサートがうまくいかなさげなので、(*´Д｀)
マルチマップに格納したあとにマルチインデックスに格納することにした。


   149    for (auto& x:m) {
   150      // std::cout << x.first << " => " << x.second << std::endl;                                                                                                                     
   151
   152          for (auto& y:m) {
   153            if(x.first == y.first && x.second != y.second)
   154              {
   155                // std::cout << x.first << "," << x.second << "," << y.second << std::endl;                                                                                           
   156                dict.insert(session(x.first, x.second,  y.second));
   157              }
   158          }
   159    }
   161    for (auto & it: dict.get<0>()) {
   162      std::cout << it.linenumber << "," << it.source_ipaddr << "," << it.dest_ipaddr << std::endl;
   163    }

コードはこちら
https://github.com/RuoAndo/qiita/blob/master/ipaddress6.cpp

実行してみる。。。(IPアドレスはランダムに生成)


$ cat random_data.txt 
"2019/07/02 02:02:00.839","2019/07/02 02:02:00","2019/07/02 02:02:00","841","255.178.167.132","25846","iy","69.215.218.225","51321","bu","8MP","VX13Gpdkt","drN","deETa","gyAY4gdZ","8","TJoPPQuOKvrxzAjCd11rpqqSqs","912","198","336","769","278","554","rand-pa1"
"2019/07/02 02:02:52.006","2019/07/02 02:02:52","2019/07/02 02:02:52","478","104.40.197.93","41214","ol","76.213.36.241","23907","Vu","OYF","H6zQlnN5X","yV3","P2VPw","9D3viFsS","5","cogAhSIycmvdYl7RaZNjGCsWqj","953","917","636","718","142","607","rand-pa1"
"2019/07/02 12:12:16.086","2019/07/02 12:12:16","2019/07/02 
$ ./a.out random_data.txt 
line:0 255.178.167.132:0
文字数：14
　内容：69.215.218.225,0
line:0 69.215.218.225:0
文字数：13
　内容：104.40.197.93,1
line:1 104.40.197.93:0
文字数：13
　内容：76.213.36.241,1
line:1 76.213.36.241:0
文字数：14
　内容：120.175.225.23,2
line:2 120.175.225.23:0
文字数：13
　内容：55.156.36.246,2
line:2 55.156.36.246:0
Displaying elements...
0,255.178.167.132,69.215.218.225
1,104.40.197.93,76.213.36.241
2,120.175.225.23,55.156.36.246

（｀ー´）b