8 Jun
2017
8 Jun
'17
7:58 a.m.
Le jeudi 8 juin 2017, Arthur Krewat <krewat(a)kilonet.net> a écrit :
On 6/7/2017 3:03 PM, Ron Natalie wrote:
I doubt that avoiding a decrement was really the reason. I mean, it's an
array: if you're 0-basing it you're still paying a decrement but for bounds
checking this time. Keeping as close as possible to how the target machine
worked or following a convention in another hand, that I can see.
Loïc
--
ARJANEN Loïc Jean David
http://blog.luigiscorner.com
---
“Computer science is no more about computers than astronomy is about
telescopes, biology is about microscopes, or chemistry is about beakers and
test tubes. Science is not about tools. It is about how we use them, and
what we find out when we do.”
Michael R. Fellows and Ian Parberry
Why go to the trouble of decrementing the index
to retreive the first
or
subtract was not something to be taken lightly :)
entry?
What makes you think that you have to decrement the index. Don't get
sucked up in the idiotic C implementation of an array. Arrays can be
efficiently implemented no matter where the index starts.
In the days when memory and clock cycles were costly, an extra decrement