public IEnumerable <string> GetAccountNumbersWithLINQ() // TOTAL : ( O(x) + O(y) ) + O(y)
{
var CANumbersList = CurrentAccountList.Select(ca => ca.Number).ToList(); // O(x)
var SANumberList = SavingAccountList.Select(sa => sa.Number); // O(y) : x = ca ; y = sa
return(CANumbersList.Concat(SANumberList)); // Where I assume that they do append, so I assume is a O(y)
}
/// <summary>
/// Using a Enumerator and the Yield keyword.
/// </summary>
/// <returns></returns>
public IEnumerable <IAccount> GetAccountNumbers() // O(x) + O(y) : x = ca ; y = sa ==> Better performance and i have Single Responsability
{
if (CurrentAccountList != null && CurrentAccountList.Any())
{
foreach (var ca in CurrentAccountList)
{
yield return(ca);
}
}
if (SavingAccountList != null && SavingAccountList.Any())
{
foreach (var sa in SavingAccountList)
{
yield return(sa);
}
}
}
