Runtime performance of operations?

[Marc Coquand]

Heya!

I love recutils, thanks for building it.

I am curious about the performance characteristics of the tool.

Do selections/updates use linear scans, or are there any optimizations
to make them faster?

For example when I run ~recset -n~, will it scan the entire file to find
the entry each time or does it do something clever to perform it faster? 

Thanks in advance,
- Marc