Hi, A few days ago I wrote an issue on Github [1] for opinions on more informative errors in math/calculus. Understandably, most people seem to have overlooked it. I now also wrote a pull-request [2] for you to try out and see whether you like the errors. For example:
load 'math/calculus' NB. current version # deriv 1|domain error: deriv| 13!:8(3) load 'calculus.ijs' NB. version of this pull request # deriv 1|domain error|undifferentiable primitive: # : ferror| FANCY error REPORT I'm curious to hear your opinions! Jan-Pieter [1]: https://github.com/jsoftware/math_calculus/issues/7 [2]: https://github.com/jsoftware/math_calculus/pull/8 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
