Re: ranges reading garbage

[anonymous via Digitalmars-d-learn]

On Sunday, 15 February 2015 at 19:54:45 UTC, anonymous wrote:

Reduced some more:

import std.algorithm, std.stdio;
void main()
{
    int ys_length = 4;
    auto indices = [0]
        .map!(xBase => [0].map!(y => ys_length))
        .joiner();
    writeln(indices);
}

And more:

import std.stdio;
struct MapResult(alias fun)
{
    @property int front() {return fun();}
    @property auto save() {return typeof(this)();}
}
void main()
{
    int ys_length = 4;
    auto dg = {return MapResult!({return ys_length;})();};
    writeln(dg().front); /* 4, correct */
    writeln(dg().save.front); /* garbage */
}