What is the most efficient way to place objects within a list contained in another object?

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What is the most efficient way to place objects within a list contained in another object?

Asked 7 years, 3 months ago

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     public turma(string nomeTurma)
     {
                this.nomeTurma = nomeTurma;
                listaAlunos = new List<aluno>();
      }   

      public aluno(string nomeAluno, string dataDeNascimento, string nomeTurma)
        {
            this.nomeAluno = nomeAluno;
            this.dataDeNascimento = dataDeNascimento;
            this.nomeTurma = nomeTurma;

        } 


     public  List<aluno> listaAlunos;

     foreach (var item in turmas)
      {
         if (item.nomeTurma == novoAluno.NomeTurma)
         {
            item.listaAlunos.Add(novoAluno);
         }
     }

I am placing students inside the listAlunos that is a property of the class object and for that I used a foreach where I check if the class that the student registered already exists created and if this exists I will put the student.

Is there any more efficient way to do this?

Do not understand the question comment below that I will improve the issue.

I could post how you’re filling out the data from turmas and novoAluno? This data is coming from a database or a form?

– Randrade

2017/08/01 at 00:27
The code is a little weird, where is this foreach? That’s all different classes, right? Where did this one come from novoAluno?

– Maniero

2017/08/01 at 00:27
@Randrade data comes from a form

– Amadeu Antunes

2017/08/01 at 00:28
@New moustachAluno = new learnerAluno

– Amadeu Antunes

2017/08/01 at 00:29
@Amadeuantunes I’m not sure I understand. Are you bringing the class list and the new student a form? While you’re at it, you could post the form code?

– Randrade

2017/08/01 at 00:30
@Randrade https://pastebin.com/LggbPegP

– Amadeu Antunes

2017/08/01 at 00:31
That code is not what’s in the question.

– Maniero

2017/08/01 at 00:32
@bigown https://pastebin.com/9yq8cpVj

– Amadeu Antunes

2017/08/01 at 00:33
1

@Amadeuantunes Ever thought about doing the where in the foreach()? Something like foreach (var item in turmas.Where(t => t.nomeTurma == novoAluno.NomeTurma))

– Randrade

2017/08/01 at 00:37
that would be more efficient ?

– Amadeu Antunes

2017/08/01 at 00:38
1

But efficient is certainly not, is more concise, more declarative, needs to see what the goal is. It seems to me that more efficient than what you have done does not, unless the whole structure of the application can be changed, which should not even be the case. And if you need that efficiency, that’s another question.

– Maniero

2017/08/01 at 01:08
@bigown and instead of using the foreach could use the find ?

– Amadeu Antunes

2017/08/01 at 01:14
I don’t see how, nor is searching there.

– Maniero

2017/08/01 at 01:37
Why not use the .Any? https://answall.com/questions/32934/como-verificar-se-existe-um-elemento-dentro-de-uma-lista

– mercador

2017/08/01 at 01:49

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