Your feedback and some more thinking about it has convinced me to not
make the backward-incompatible change.
I'm still going to make Plot objects (though not in 6.2). They'll just
be created by different functions.
Neil ⊥
On 03/18/2015 06:38 PM, Doug Williams wrote:
You know I use it a lot. Is there someway to check it out ahead of time?
My main concern is with my plots that are embedded in various GUI
elements. I sometimes did some weird things there,
On Tue, Mar 17, 2015 at 10:33 AM, Neil Toronto <[email protected]
<mailto:[email protected]>> wrote:
Plot has been converted to Typed Racket in the upcoming Racket 6.2.
I'm strongly considering taking this opportunity to improve the API.
The change is backward-incompatible, however, so I need input from
those of you who use Plot a lot.
In particular, recent experience with Pict3D makes it clear that the
type of the `plot` function shouldn't be this:
(-> (Treeof (U nonrenderer renderer2d)) ... (U Void (Instance
Snip%)))
but should be this instead:
(-> (Treeof (U nonrenderer renderer2d)) ... Plot)
where a `Plot` instance is a value that can be queried for its
properties (such as the legend, plot bounds, ticks, etc.) and just
happens to print in DrRacket as an interactive snip. The type of
`plot3d` would be changed to return `Plot3D` instances.
Casual uses wouldn't see any change at all.
However, functions that receive or return plots, *which also put
contracts on plots*, would have to change to use `plot?` instead of
(is-a?/c snip%), or use (require plot/snip), a new compatibility
module, instead of (require plot).
How many programs of yours would this change break?
Any objections? Any suggestions?
Neil ⊥
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