Hi, --8<---------------cut here---------------start------------->8--- (use-modules (ice-9 match))
(match-lambda (_ #f))
--8<---------------cut here---------------end--------------->8---
This source code leads to a warning when compiled:
--8<---------------cut here---------------start------------->8---
$ guix shell guile-next -- guild compile -W3 -o /tmp/xx.go /tmp/xx.scm
/tmp/xx.scm:3:0: warning: unused variable `failure'
wrote `/tmp/xx.go'
--8<---------------cut here---------------end--------------->8---
Looking at the expansion
--8<---------------cut here---------------start------------->8---
(lambda (expr)
(let* ((v expr)
(failure
(lambda ()
((@@ (ice-9 match) throw)
'match-error
"match"
"no matching pattern"
v)
#f)))
#f))
--8<---------------cut here---------------end--------------->8---
the `failure' is indeed unused. I took a look at the source code but it
is bit beyond my current abilities, so I am not sure how to fix it.
Tomas
--
There are only two hard things in Computer Science:
cache invalidation, naming things and off-by-one errors.
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