Hello .NET, D Here Calling

bearophile bearophileHUGS at lycos.com
Tue Dec 23 03:38:46 PST 2008

Chad J Wrote:
> This is exactly where I'm coming from.  I used to use C# properties a
> lot.  They are super effective.

In C# you can use for example:

class TimePeriod {
    private double seconds;

    public double Hours {
        get { return seconds / 3600; }
        set { seconds = value * 3600; }

Or just:

public double TotalPurchases { get; set; }

Some people have proposed:

public int property Myval {
    set {
        if (value > 10)
            throw new Exception();
            Myval = value;

Time ago I have written this for D1, I don't know if it can be useful:

import std.metastrings: Format;

template AttributeGetSet(Type, string name) {
    const AttributeGetSet = Format!("
        private %s %s__;
        public %s %s() { return this.%s__; }
        public void %s(int %s__local) { this.%s__ = %s__local; }
    ", Type.stringof, name, Type.stringof, name, name, name, name, name, name);

C# also has indexers:

>Indexers allow instances of a class or struct to be indexed just like arrays. Indexers resemble properties except that their accessors take parameters.<


Usage example:

class SampleCollection<T> {
    private T[] arr = new T[100];

    public T this[int i] {
        get {
            return arr[i];

        set {
            arr[i] = value;

But to me that looks a lot like the opIndex/opIndexAssign/opIndexLvalue of D.


More information about the Digitalmars-d mailing list