Hacker News Reader

Comment by Royalaid | Hacker News Reader

Have you tried out recent versions of CIDER? I find it works good for that I need. But I have to say that the big problem I have is Emacs and its inability to handle long strings.

View on HN

I may be missing some massive leap but until it does this http://malisper.me/2015/07/07/debugging-lisp-part-1-recompil...

AHHH, not quite the same, nor as good but sayid(https://github.com/bpiel/sayid) is a step in the right direction

CIDER has had debugging abilities like this for a year, there's a sexp based interactive debugger that allows injection, evaluation, stepping etc.

Here's a 39 second video about it https://www.youtube.com/watch?v=A3JAlWM8qRM

The debugger needs to 'instrument' the code with breakpoints...?

That's something different.

In a Lisp system I would have an arbitrary amount of code and can halt and inspect/debug any code without any prior need to 'instrument' code.

To debug a function, yes, you need to eval the form using instrumentation. Then the debugger starts when this form is evaluated. This is the the only major difference to what SLIME provides. Adding breakpoints is somewhat easier with cider, you don't need to call break but you can just add a breakpoint to any sexp by pressing b.

> Then the debugger starts when this form is evaluated.

You mean the stepper using break-instrumented code? That's just a part of what one would call 'debugger' in Lisp.

What CIDER calls 'debugger' would be mostly called 'stepper' in Lisp.

http://franz.com/products/allegro-common-lisp/stepper_dialog...

http://www.lispworks.com/documentation/lw70/IDE-M/html/ide-m...

> Adding breakpoints is somewhat easier with cider, you don't need to call break but you can just add a breakpoint to any sexp by pressing b.

LispWorks does that, too. Usually via a break icon in the window toolbar or the context menu.

Toggling pretty printing via `cider-repl-toggle-pretty-printing` may provide a workaround there. Courtesy of: https://github.com/clojure-emacs/cider/issues/1115

Reply on news.ycombinator.com