Kotlin's scope functions in C#

#kotlin #csharp

Kotlin's scope functions(.let, .also, .apply, etc) are super useful.

I want to these methods in C#.
So I just define it!

static class ObjectExtensions 
{
    // Kotlin: fun <T, R> T.let(block: (T) -> R): R
    public static R Let<T, R>(this T self, Func<T, R> block) 
    {
        return block(self);
    }

    // Kotlin: fun <T> T.also(block: (T) -> Unit): T
    public static T Also<T>(this T self, Action<T> block)
    {
        block(self);
        return self;
    }   
}

Usage

var text = resultCode.Let(x => {
    switch (x) {
        case 0:
            return "success";
        default:
            return $"error({x})";
    }
});

var model = new MyModel().Also(m => {
    m.Initialize();
    m.Load(path);
});