"The D Way" to run a sequence of executables?

[Chris M.]

On Friday, 24 August 2018 at 17:36:25 UTC, Matthew OConnor wrote:
> I'd like to run a sequence of executables with something like 
> std.process.execute, but I would like the sequence to error out 
> if one of the executables returns a non-zero return code. What 
> is the recommended way to do this? A wrapper that throws 
> exceptions? Checking return values?

Here'd be a neat way if you don't mind it not terminating early. 
The first call will need a dummy value for prevStatus where the 
status field is 0.

import std.typecons;

alias ExecuteTuple = Tuple!(int,"status",string,"output");

ExecuteTuple call(ExecuteTuple prevStatus, string process)
{
     import std.process;
     if (prevStatus.status != 0)
         return prevStatus;
     else
         return execute(process);
}