Hi All --
I'm an HtDP veteran but otherwise a newbie to the world of commercial
programming. Recently, I fell into a contract job which consists of moving
data from one MS SQL Server database to another, and using SQL scripts to
"cleanse" the data. The scripts are brutally repetitive, and seem l
Sorry for the noise: I think I answered my own question. You basically
stick a pinhole in the image you want to place at its desired center, you
put a pinhole on the scene at the place you want the image to go, and you
use overlay/pinhole to place the image (or place-image/align, and use
'pinhole
In playing around with image.ss, I've run into the following problem: the
center of an image does not appear to be rotation invariant. Thus, if you
use place-image/align in order to place a triangle, say, that you then
rotate continuously, you will see the triangle wobble as its effective
center m
On Sat, Feb 5, 2011 at 9:43 PM, Mark Engelberg wrote:
> There are projects that are trivial in Scratch that are hard in Racket, and
> vice versa. Porting your Scratch projects to Racket is not likely to be a
> very productive use of your time because they have such different strengths
> and weakn
There are projects that are trivial in Scratch that are hard in Racket, and
vice versa. Porting your Scratch projects to Racket is not likely to be a
very productive use of your time because they have such different strengths
and weaknesses. I think your best bet is to pick some projects which ar
On Wed, Feb 2, 2011 at 7:20 AM, Stephen Bloch wrote:
>
> > Another thing I'd be interested in suggestions with is how to deal with
> updating a struct in a clean way. Right now, you need to explicitly wrote
> set-world-X functions for each field in your struct, which is pretty ugly.
> Also, the
On Wed, Feb 2, 2011 at 10:23 AM, Matthias Felleisen wrote:
>
> On Feb 1, 2011, at 9:27 PM, Yaron Minsky wrote:
>
> > I'm finding it to be rather tough going, mostly because a lot of things
> that are really easy in scratch seem surprisingly hard in racket.
>
> [I thought we had discussed this befo
I've been learning Racket using Emacs with quack. Unfortunately
quack-view-keyword-docs doesn't seem to work with Racket docs (perhaps
this is already fixed in a new version of quack? I'm using quack
0.40), so I thought fellow quack+racket users might be interested in
this workaround (elisp):
(def
For write to registry I use "shell-execute" and "reg" utility. I forgot what
the problem is to use "write-resource", but it was.
"read-resource" from registry I use less frequently, but no doubt, it needed,
for example, for read system information.
write-resource/read-resource I use mainly for
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