Re: [racket-users] How to get information about where an error occurs, in a stack trace context?

> > The calls that are missing appear to tail calls, and Racket performs > tail-call optimization, so I imagine those missing functions are not > really "on the stack" at the time of the error. > > I don't know that there is a way around this except to deliberately > subvert the tail-call

Re: [racket-users] How to get information about where an error occurs, in a stack trace context?

On Thu, Nov 19, 2015 at 09:04:49PM -0800, thomas.lynch wrote: > I have a related question. I turned on error trace using the command line > Robby > suggested, but it doesn't give me a trace, but rather just the call point and > error function. Here is an example, the trace should be f -> gg ->

Re: [racket-users] list? not in HtDP's BSL

At this point it is an oversight. > On Nov 21, 2015, at 6:51 AM, Paolo Giarrusso wrote: > > list? is not available [1] in either BSL or BSL with list abbreviations. Why? > Lists are used everywhere even in BSL, and `list?` literally appears in half > its documented

Re: [racket-users] quote-srcloc an questions of getting location

> The objective here is to get a source/loc structure with call point from the > stx passed into the syntax transformer. Is this what quote-srcloc is for? I haven't had a need to use `quote-srcloc`. Although I don't know the context of what you're trying to do, I wanted to check whether you

[racket-users] Re: racket users fight for their right to colon keywords

Coming late to this. On Wed, 14 Oct 2015 11:50:41 -0400, Neil Van Dyke wrote: >We are conducting a highly scientific poll. > >The question we want to answer is whether people would like for the >Racket standard languages to have symbols that begin with the colon

[racket-users] quote-srcloc an questions of getting location

The example in the manual for quote-srcloc shows it wrapped as a syntax object, and it gives the correct call point location answer. however, when the result from quoteloc is instead put in a variable, then variable has the wrong location (not the call location of stx). An explanation of this

[racket-users] list? not in HtDP's BSL

list? is not available [1] in either BSL or BSL with list abbreviations. Why? Lists are used everywhere even in BSL, and `list?` literally appears in half its documented contracts in beginner docs [2] — how should students understand them? I've looked for reasons, to no avail. I've only