Sortie de la version 0.6 de Dvp.NET

La librairie open source .NET développée par des membres de Developpez.com

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var flat = rootNodes.Flatten( 
            node => node.Children, 
            TreeTraversalMode.DepthFirst, 
            (node, lvl) => new { Level = lvl, Name = node.Name });

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// Génère les nombres de Fibonacci inférieurs à 100 
var fibonacci = 
    LinqHelper.Generate( 
        new { value = 0, next = 1 }, 
        s => s.value < 100, 
        s => new { value = s.next, next = s.value + s.next }, 
        s => s.value);

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Foo foo; 
if (!_foos.TryGetValue(key, out foo)) 
{ 
    foo = CreateFoo(key); 
    _foos[key] = foo; 
} 
return foo;

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return _foos.GetOrAdd(key, k => CreateFoo(k)); 
  
// ou encore plus simple : 
return _foos.GetOrAdd(key, CreateFoo);

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string sql = "INSERT INTO Persons(Id, LastName, FirstName, DateOfBirth) VALUES (@id, @lastName, @firstName, @dateOfBirth)"; 
using (var command = connection.CreateCommand(sql)) 
{ 
    var parameters = new 
    { 
        Id = Guid.NewGuid(), 
        LastName = "Morrison", 
        FirstName = "Jim", 
        DateOfBirth = new DateTime(1943, 12, 8) 
    }; 
    command.SetParameters(parameters).ExecuteNonQuery(); 
}

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string sql = "SELECT * FROM Persons WHERE Country = @country AND Age > @minAge"; 
var parameters = new { Country = "France",  MinAge = 18 }; 
foreach (var result in connection.Query(sql, parameters)) 
{ 
    Console.WriteLine("{0} {1}", result.GetString("FirstName"), result.GetString("LastName")); 
}

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string sql = "SELECT Age FROM Persons WHERE Id = @id"; 
var parameters = new { Id = 42 }; 
int age = (int)connection.QueryScalar(sql, parameters);

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string sql = "INSERT INTO Persons(Id, LastName, FirstName, DateOfBirth) VALUES (@id, @lastName, @firstName, @dateOfBirth)"; 
var parameters = new 
{ 
    Id = Guid.NewGuid(), 
    LastName = "Morrison", 
    FirstName = "Jim", 
    DateOfBirth = new DateTime(1943, 12, 8) 
}; 
connection.Execute(sql, parameters);

string max = StringComparer.CurrentCulture.Max("hello", "world");

string text = user.FormatWithTemplate("{Name} est né le {DateOfBirth:dd MMMM yyyy} et habite à {City}");

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using (var pixels = bitmap.LockPixels(ImageLockMode.ReadWrite)) 
{ 
    for (int y = 0; y < pixels.Height; y++) 
    for (int x = 0; x < pixels.Width; x++) 
    { 
        Color c = pixels[x, y]; 
        pixels[x, y] = TransformColor(c); 
    } 
}