Question

I’ve been trying to solve this by reading what was on StackOverflow and the information was quiet helpful but i can’t seem to implement the things i found.

I have a data List and i want to check if an entry exists in the data set that match 2 variables i provide.

public void SaveWaveDataFor( List<WaveData> newData )
{
    foreach(WaveData wave in newData)
    {
        //WaveData item = data.FirstOrDefault( o => o.id == wave.id );
        var item = data.Select( o => new{ wave.id, wave.waveNumber  } );
        Debug.Log( item.id );
    }
}

Answer 1

If you want to get all of the wave objects that match two criteria, you can use a Where() clause:

// items will be an IEnumerable<WaveData> containing the matching objects
// where id == matchId and waveNumber == matchNumber
var items = data.Where(o => o.id == matchId && o.waveNumber == matchNumber);

The Select() clause is typically used to transform the matching elements into objects of another type.