C# dictionaries ValueOrNull / ValueorDefault

Question

Currently I\'m using

var x = dict.ContainsKey(key) ? dict[key] : defaultValue

I\'d like some way to have dictionary[key] return null for nonexi

Answer 1

You can use a helper method:

public abstract class MyHelper {
    public static V GetValueOrDefault( Dictionary dic, K key ) {
        V ret;
        bool found = dic.TryGetValue( key, out ret );
        if ( found ) { return ret; }
        return default(V);
    }
}

var x = MyHelper.GetValueOrDefault( dic, key );