[racket-dev] find-secs error while building 5.3.2 (fwd)

Good question. I just looked through the code, and I don't think so. 
Dates and times are always in seconds in the first place, and generally 
just get turned into dates for display. The only reason it needs to turn 
dates into seconds (i.e. using `find-seconds' via `date->seconds') is to 
round to the nearest month or year. In those cases, the time fields are 
all zero, and the day is always 1.

I assume (find-seconds 0 0 0 1 m y) should never fail. Is that wrong?

Neil ⊥

On 02/06/2013 06:05 PM, Robby Findler wrote:
> Does date-ticks possibly needs to cope with find-seconds failing to find
> the seconds?
>
> Robby
>
>
> On Wed, Feb 6, 2013 at 5:02 PM, Neil Toronto <neil.toronto at gmail.com
> <mailto:neil.toronto at gmail.com>> wrote:
>
>     On 02/06/2013 02:14 PM, Jimmy Olgeni wrote:
>
>
>         On Wed, 6 Feb 2013, Jimmy Olgeni wrote:
>
>             The problem is that, due to this error, "make install" does not
>             complete and I cannot get a repeatable build for the
>             package, but
>             maybe I can find a way to exclude the plot docs build.
>
>             Does the weird date come from the docs source?
>
>
>         I found it in collects/plot/tests/low-level-__tests.rkt. I'll
>         look for a
>         way around :)
>
>
>     Those are tests, which aren't run during setup. Besides that,
>     there's no (find-seconds 0 0 0 1 5 1970) in "low-level-tests.rkt".
>
>     I scanned through the plot documentation and found this, though:
>
>        (parameterize ([plot-x-label      "Near x axis"]
>                       [plot-y-label      "Near y axis"]
>                       [plot-z-label      "Near z axis"]
>                       [plot-x-ticks      (date-ticks)]
>                       [plot-y-ticks      (time-ticks)]
>                       [plot-z-ticks      (fraction-ticks)]
>                       [plot-x-far-label  "Far x axis"]
>                       [plot-y-far-label  "Far y axis"]
>                       [plot-z-far-label  "Far z axis"]
>                       [plot-x-far-ticks  (linear-ticks)]
>                       [plot-y-far-ticks  (currency-ticks)]
>                       [plot-z-far-ticks  (log-ticks #:base 2)])
>          (plot3d (lines3d '(#(1 1 1) #(40000000 4 4)) #:style 'transparent)
>                  #:angle 45 #:altitude 50
>                  #:title "Axis Names and Tick Locations"))
>
>     One of the tick labels on the near x axis is "1970-05". I don't
>     remember exactly how the tick layout and formatting code works, but
>     it's very possible that it uses `find-seconds' with the arguments 0
>     0 0 1 5 1970 to position that label.
>
>     BTW, it's not January 5, but May 1. Is that a valid date on your
>     machine? Also, does either (find-seconds 0 0 0 1 5 1970 #f) or
>     (find-seconds 0 0 0 1 5 1970 #t) fail in Racket?
>
>     Neil ⊥
>
>
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