C#: generic function that return element from collection based on condition

Question

So i have this function that return element from collection based on condition

public static T Search<T>(IEnumerable<T> source, Func<T, bool> filter)
{
    return source.FirstOrDefault(filter);
}

And i want to convert this to return all the elements form my collection that mach my condition.

so instead of change the function signature to public static IEnumerable<T> Search<T>(IEnumerable<T> source, Func<T, bool> filter)

What i need to changed inside my function ?

Just use the `First()`, `Where()` directly, they are standard in C#, no need to wrap them inside another `Search()` function — Vladi Pavelka, Oct 08 '18 at 16:06

score 5 · Accepted Answer · answered Oct 08 '18 at 16:01

5

Use Where instead of FirstOrDefault

public static IEnumerable<T> Search<T>(IEnumerable<T> source, Func<T, bool> filter)
{
    return source.Where(filter);
}

answered Oct 08 '18 at 16:01

Tim Schmelter

score 1 · Answer 2 · answered Oct 08 '18 at 16:02

1

Use the Where method instead of FirstOrDefault

answered Oct 08 '18 at 16:02

Jonas Høgh

2 Answers2