Would you deem a question like (highly simplified)
Did anybody implement [a specific function/algorithm] in the PostgreSQL/PostGIS environment [or know of someone who did/shares a code-base]?
acceptable for GIS.SE, provided sufficient information on research/availability on the problem, and the clear distinction to Software Recommendations (i.e. knowing exactly what other software provides support)?
I did an exhaustive search on a specific (GIS-related) problem and tried to locate any custom implementation for PostGIS with no result, and before starting to implement that myself I'd like to ask the community e.g. if I have overseen anything on the common repository hubs etc.
Asking this on GIS.SE seems natural, but I think I'm wrong here...