Daily Learnings

Quick notes on technical things I learn each day.

12 Mar 2026
Byte and codepoint length
11 Mar 2026
Invalid range in getting substring
10 Mar 2026
Projecting a substring
9 Mar 2026
Conditional projection with switch
8 Mar 2026
Conditional projection
7 Mar 2026
Group projected documents
6 Mar 2026
Basic numeric aggregation stage
5 Mar 2026
Updating specific result set field
4 Mar 2026
Select field from lookup result
3 Mar 2026
Join collections with lookup