Re: char ***argc problems.

[Timon Gehr]

On 08/12/2012 10:33 PM, Andrew wrote:

I'm attempting to create a wrapper for MPI, however, MPI_Init
wants to read the arguments for main():

MPI_Init(int *argv, char ***argc);

How do I get this last level of pointer reference?

So far, I have:

void main (string[] args)
{
    auto argarr = new char*[args.length];
    foreach(i, a; args)
    argarr[i] = (a.dup ~ '\0').ptr;

    int argc = to!(int)(argarr.length);
    MPI_Init(&argc, argarr.ptr);
}

Any ideas?

-Andrew

Maybe like this?

import std.algorithm, std.array, std.conv;
void main(string[] args){
    auto argarr = args.map!(a=>(a ~ '\0').ptr).array;

    int argc = to!(int)(argarr.length);
    auto argv = argarr.ptr;

    MPI_Init(&argc, &argv);

    args = argv[0..argc].map!(to!string).array;

    // ...
}