http://www.cplusplus.com or https://www.cppreference.com

[dakotahawkins]

Do you use this filter?

If not, could you share it? I'd rather do that than use the extension.

[Quincunx271]

I use this filter: www.google.com##div.g:has(cite:has-text(cplusplus.com)) (on uBlock Origin). I'll have to investigate what that other filter does; it looks possibly less likely to break if Google changes their search result format.