Re: [article] Language Design Deal Breakers

[Walter Bright]

On 5/28/2013 7:40 PM, Jesse Phillips wrote:

On Monday, 27 May 2013 at 07:53:05 UTC, Walter Bright wrote:

In D, right now (and especially with the beta) you can use the NotNull template.

Where is this NotNull template? If it was in Phobos I would expect
http://dlang.org/phobos/std_typecons.html

It's not in Phobos yet:

struct NotNull(T) {
    T p;

    alias p this;

    this(T p) {
        assert(p != null, "pointer is null");
        this.p = p;
    }

    @disable this();

    NotNull opAssign(T p) {
        assert(p != null, "assigning null to NotNull");
        this.p = p;
        return this;
    }
}