Subject: [_]struct within [_]struct (was comptime map)
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From: Peter Bridge <peter_bridge@hotmail.com>
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Date: Sat, 10 Sep 2022 10:14:40 +0200
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My latest attempt with structs requires the array to be outside of the 
'steps' definition so I can keep the array handle, but pass over a 
slice...  ideally I would like the event mappings to be defined with the 
steps definition...

I just discovered Zig tuples, and thinking it might offer a cleaner 
solution.  But I am struggling to find documentation on them, ie how to 
use them and memory ownership.  Any tips please?


const STEP_START_EVENTS = [_]EventMapping{EventMapping{
     .event = EVENT_NEXT,
     .nextStep = STEP_SPLASH,
}};

const STEP_SPLASH_EVENTS = [_]EventMapping{EventMapping{
     .event = EVENT_PREV,
     .nextStep = STEP_START,
}};

const steps = [_]StepDescriptor{
     StepDescriptor{
         .step = STEP_START,
         .debug = 2,
         .eventMapping = STEP_START_EVENTS[0..],
     },
     StepDescriptor{
         .step = STEP_SPLASH,
         .debug = 5,
         .eventMapping = STEP_SPLASH_EVENTS[0..],
     },
};