Subject:
|
RE: Why Java for Robots (was NXT and bluetooth enabled phones)
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Tue, 17 Jan 2006 15:50:25 GMT
|
Original-From:
|
Laurent Desnogues <LAURENT.DESNOGUES@ARMantispam.COM>
|
Viewed:
|
1538 times
|
| |
|
|
PeterBalch wrote:
>
> What is a robot sitting on Mars to do if it gets an "out of
> memory" or "illegal pointer value" or "array bounds exceeded"
> error? The first two should never ever happen in a robot. The
> last should have been caught by the compiler.
Well what about an indexation based on a sensor value?
How could your compiler know the range the sensor has?
Sample:
int volatile *color_sensor = (int *) 0x4000;
int getColor(void)
{
static int color[4] = { 123, 456, 789, 111 };
return color[*color_sensor];
}
How would you tell your C compiler that the real range of the
color sensor is 0..4 and not 0..3? No static analysis will
get that!
I guess that puts C in your "shoot the language-designer"
category :)
Laurent
-- IMPORTANT NOTICE: The contents of this email and any attachments are
confidential and may also be privileged. If you are not the intended recipient,
please notify the sender immediately and do not disclose the contents to any
other person, use it for any purpose, or store or copy the information in any
medium. Thank you.
|
|
1 Message in This Thread:
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
