devoyster

public void MyMethod(string str)
{
    CheckUtil.NotNullOrEmpty(str, "str");
}

devoyster

public static void ForEach<T>(this IEnumerable<T> source, Action<T> action)
{
    if (action == null)
    {
        throw new ArgumentNullException("action");
    }
    foreach (T item in source)
    {
        action(item);
    }

devoyster

// Here different expression keys should be generated since parameter "value" is different
// for two expressions at the moment of their creation
int value = 1;
Expression<Func<string, string>> expr1 = s => s.Length > value ? s.Substring(0, value) : s;

int value = 2;
Expression<Func<string, string>> expr2 = s => s.Length > value ? s.Substring(0, value) : s;

// Here same expression keys should be generated since parameter value (1) is the same
// for two expressions at the moment of their creation

devoyster

public class VariablesReductionVisitor : ExpressionVisitor
{
    private List<Expression> _children;

    public override Expression Visit(Expression node)
    {
        // Preserve parent's child expressions collection
        var siblings = _children;
        _children = new List<Expression>();

devoyster

Serialization of 90 objects, 1000 iterations:

                     Write(ms)  Read(ms)  Size(bytes)
BinaryFormatter            634       517         9807
protobuf-net v2            219       253         5179

devoyster

var model = RuntimeTypeModel.Default;

// Obtain all serializable types having no explicit proto contract
var serializableTypes = Assembly.GetExecutingAssembly()
    .GetTypes()
    .Where(t => t.IsSerializable && !Attribute.IsDefined(t, typeof(ProtoContractAttribute)));
foreach (var type in serializableTypes)
{
    var metaType = model.Add(type, false);
    metaType.AsReferenceDefault = true;

devoyster

// Explicit proto contract
[ProtoContract]
public class MappedEntity
{
    [ProtoMember(1)]
    public int Id { get; set; }

    [ProtoMember(2)]
    public string Name { get; set; }
}