public static IEnumerable <TResult> SelectWhere <T, TResult>(
this IEnumerable <T> me,
OutPredicate <T, TResult> predicate)
{
foreach (var item in me)
{
if (predicate(item, out var result))
{
yield return(result);
}
}
}
public static T Get <T>(string askingMessage, string errorMessage, OutPredicate <string, T> predicate)
{
Console.WriteLine(askingMessage);
T value;
while (predicate(Console.ReadLine(), out value))
{
Console.Clear();
Console.WriteLine(errorMessage);
}
return(value);
}
