Comment Boxes

[Grant Rettke]

Hi folks,

In DrScheme you can comment out code either using semicolons or by
using a "box".

The way that it works is that you:
1. Select the code you want to put in a comment box.
2. Go to the Scheme menu and select Comment Out With a Box.

You may find this particularly useful when you get to the structure
template definitions in chapter 6. It makes them much nicer to write,
read, and maintain.

Best wishes,

Grant

[Geoffrey Lane]

Useful because the code is still syntax colorized, and you can select
it without selecting the semi-colons.

The odd thing is doing that turns the file into some totally
unreadable (human unreadable at least) representation of the file. I
guess that's to get around the lack of block comments?

[Grant Rettke]

> The odd thing is doing that turns the file into some totally unreadable
> (human unreadable at least) representation of the file.

I assume that is the special format for storing "enhanced" data like
boxes or images.

> I guess that's to get around the lack of block comments?

You can do block comments like this:

#|
hello, world
|#

You don't get the nice formatting and editing features, though.

[Kartik]

I recently used comment box to insert a small picture to help
understanding the assignment better (area of pipe problem). I love
this feature. Only downside is (as Geoff has already pointed out) the
file then becomes unreadable in another editor.

Kartik