I was recently tasked with thinking about returning optional tracing information about the execution of a complex algorithm. It's the kind of data you need to analyse the inner workings - a bit like logging of intermediate results but being programmatically available to the caller and optional.

I only had rather bad ideas that involve too many changes to the core algorithm, like passing additional parameters all the way through. Also I could find anything on the web.

thanks fricke

I was recently tasked with thinking about returning optional tracing information about the execution of a complex algorithm. It's the kind of data you need to analyse the inner workings - a bit like logging of intermediate results but being programmatically available to the caller and optional.

I only had rather bad ideas that involve too many changes to the core algorithm, like passing additional parameters all the way through. Also I couldn't find anything on the web.