TTFX with DataFrames and CSV

[lawless-m]

There’s a major TTFX discussion going on atm. There’s plenty of tips and discussion going on there

Taking TTFX seriously: Can we make common packages faster to load and use

So much work has been done to improve julia compilation and remove invalidations. Things really feel a lot snappier to use. But there is still the problem of packages that were written without much thought to startup time, and TTFX - the time-to-first whatever a package does most, is sometimes really slow. Some common problems I see are (reorganised to be in order of importance): Lack of type stability slowing down compilation. Not calling precompile for common methods, or just running them …