Yes, Scheme (and therefore Racket) has eq?, eqv?, and equal?. I understand the
desire for eq? and equal?, but I’ve always been skeptical of the necessity of
eqv?. Either way, Scheme left this behavior unspecified, but I believe Racket
specifies it (though I could be wrong).
Racket has two kinds
I'm new to Racket but even R5RS is rather clear about this issue:
(citation from doc/r5rs/r5rs-std/r5rs-Z-H-9.html)
> (eq? 2 2) ===> unspecified
>
> Rationale: It will usually be possible to implement eq? much more
> efficiently than eqv?, for example, as a simple pointer comparison instead
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Hi,
On 5/17/2015 5:32 PM, Atticus wrote:
---
$ racket
Welcome to Racket v6.1.1.
> (eq? 'l 'l)
#f
> (eq? 'l 'l)
#t
>
$ racket --no-jit
Welcome to Racket v6.1.1.
> (eq? 'l 'l)
#f
> (eq? 'l 'l)
#t
> (eq? 'l 'l)
#f
> (eq? 'l 'l)
#t
> (eq? 'l 'l)
#t
> (eq? 'l 'l)
#t
> (eq? 'l
>From the error at
http://pkg-build.racket-lang.org/server/built/test-fail/pollen.txt
is looks like the test depends on `racket` being in $PATH, but $PATH in
the (intentionally minimal) pkg-build test environment doesn't include
`racket`.
You could use `find-exe` from `compiler/find-exe` to ma
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Hello everyone,
So i am trying to learn scheme in my free time (unfortunately my
university doesn't use scheme in their undergraduate courses) and i was
comparing the equality operators in gambit and racket and encountered a
strange behaviour with the eq? operator in racket. To my surprise
compari
Can someone recommend an easy way to test Racket 9.2 pre-release on
OpenWrt (embedded GNU/Linux, running on a normal home WiFi router)?
For example, is there a big tree of files that I could just copy onto a
USB flash drive, and run with one command, and it would dump its log to
a file or stdi
Rack test defines any stderr output to be a bug.
Robby
On Sunday, May 17, 2015, Matthew Butterick wrote:
> FWIW I've had the same problem. Even though 'raco test -p pollen' shows no
> errors locally nor on Travis CI, the Racket build system produces a
> "non-empty stderr" test failure [1]. In m
FWIW I've had the same problem. Even though 'raco test -p pollen' shows no
errors locally nor on Travis CI, the Racket build system produces a
"non-empty stderr" test failure [1]. In my case, however, my test file [2]
does not use check-exn (though it does use `system`)
[1]
http://release-pkg-bui
At Fri, 15 May 2015 13:17:57 -0700, John Clements wrote:
>
> > On May 14, 2015, at 4:08 PM, Matthew Flatt wrote:
> >
> > Here are the results of a package build using the v6.2 release
> > candidate:
> >
> > http://release-pkg-build.racket-lang.org.s3-website-us-west-2.amazonaws.com/
> >
> > Co
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