nada.net

Nada.net is "not another dotnet API" with the purpose of a function library with fully-tested functions.

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Examples

List-Tree-Converter

Converting a list view into a tree is not a big deal but requires code. Nada.net has an extension method that created a hierarchical structure based on a list with id and parent id.

Convert a list to a tree

// data class with an id and a parent id.
private class Category
{
    public Category(int id, string title, int parentId)
    {
        Id = id;
        Title = title;
        ParentId = parentId;
    }

    public int Id { get; }
    public string Title { get; }
    public int ParentId { get; }
}

[Test]
public void GenerateTree_Converts_List_To_Tree()
{
    var categories = new List<Category>() {
        new Category(1, "Sport", 0),
        new Category(2, "Balls", 1),
        new Category(3, "Shoes", 1),
        new Category(4, "Electronics", 0),
        new Category(5, "Cameras", 4),
        new Category(6, "Lenses", 5),
        new Category(7, "Tripod", 5),
        new Category(8, "Computers", 4),
        new Category(9, "Laptops", 8),
        new Category(10, "Empty", 0),
        new Category(-1, "Broken", 999),
    };

    IEnumerable<TreeItem<Category>> roots = categories.GenerateTree(c => c.Id, c => c.ParentId);

    roots.First().Item.Title.Should().Be("Sport");
    roots.Skip(1).First().Item.Title.Should().Be("Electronics");
    roots.Skip(2).First().Item.Title.Should().Be("Empty");

Linq Extensions

var lst = new[] { "Avengers", "Hulk" };

// check if the list is not empty
if (lst.IsNullOrEmpty()) throw new Exception();

// iterate with foreach over an IEnumerable
lst.ForEach(Colsole.WriteLine);

Dictionary Extensions

var dct = new Dictionary<string, object>() { { "Hulk", "Bruce" }, { "Iron Man", "Tony Stark" } };

// existing value
dct.AddOrUpdate("Hulk", "Bruce Banner");

// new value
dct.AddOrUpdate("Spiderman", "Peter Parker");

JStore

The JStore can be used to read entities from json files. The implementation is simple and does not support foreign keys or filtering. The purpose is a simple entity store.

// read from file
IFileStore fileReader = new FileReader();
IStoreContext sut = new JsonFileStoreContext(fileReader);
var actual = sut.Get<Person>();

// write to file
IFileStore fileReader = new FileReader();
IStoreContext sut = new JsonFileStoreContext(fileReader);
sut.Save<Person>(people);