twitter/effectivescala — comment on commit 377096e61d3442d0e36d6959581e7e2e3d0c6d86
File: effectivescala.md line 110
By mariusaeriksen:

that's mostly arbitrary: 80 columns is a holdover from days past (when was the last time you used an 80x24 tty?), but at the same time, lines that are *too* don't read well. 100 seemed to be a reasonable limit.

also it's not a hard limit: if you have to do some formatting contortions to stay below 100 columns, just go above.