Reload data tableview in swift -

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when run tableview.reloaddata() in uitableviewcontroller, works, when call function update tableview controller not work.

//this way works normally

func reloadtableview() {

    let path = nssearchpathfordirectoriesindomains(.documentdirectory, .userdomainmask, true ).first string     let db = database("\(path)/db.sqlite");      conversasarray.removeall(keepcapacity: true);      let stmt = db.prepare("select znome,zultimamsg,zidmensagem,zimage zusuario,zchat ztelefone = zto")     var objetoconversa : anyobject = [];      row in stmt {         objetoconversa = ["znome":"\(row[0]!)", "zultimamsg":"\(row[1]!)", "zidmensagem":"\(row[2]!)", "zimage":"\(row[3]!)"];         //adiciona o objeto dentro array de objetos.         conversasarray.append(objetoconversa)     }     tableview.reloaddata();

}

//but when file tableview.reloaddata() not work.

var = tableviewcontroller();

a.reloadtableview();


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