At 6:25 PM +0200 10/6/09, Andrea Giammarchi wrote:
er ... tedd, whatever, usually ++i is faster in almost every
language, and even C developers could use these kind of micro
optimizations.
Speed, even in this SuperCPU era, is still relevant, we would not
need benchmark to compare programming languages for each purpose.
Of course in a crappy application, the usage of ++i rather than i++
won't make any difference, but specially for that kind of for loop
where there is absolutely no harm or side-effect using ++i rather
than i++ ... if ++i could be 0.0001% nobody have a valid reason to
avoid it.
Put in this way: I need to do the same thing, one could be better
... why on earth should I use the other way?
I just develop applications, where I can micro-optimize, I do it ...
I have never had speed problems, but maybe I am just lucky.
Andrea:
I think you missed my point.
First, you do whatever you want -- do you whatever makes you feel
comfortable. I'm not trying to change your ways at all.
Second, to the contrary -- all I am saying is if you have a
preference in using ++$i or $i++, then use it. But to say the reason
why you use it is because of speed is becoming less of an issue than
it was. So much so, that for people to argue either side is rather
pointless. There is no significant difference.
Sure we will continue to benchmark the speed of different languages
for comparisons, we have a long history/habit of doing that. But that
too is becoming less important than it was for what was significant
yesterday is not significant today and will be even less so tomorrow.
For example, the Human Gnome Project was first thought to be a
project that would take at least 15 years, but it was finished in 5.
Why? Because the original projections were based upon the computing
power of the day and didn't take into account advances in speed and
memory.
So while we can debate computing considerations of today, tomorrow
those will be less important. That was the point I was making. Why
not focus on things that make significant difference and let the
insignificant fade into history.
Look on the bright side, you can tell your grand children "I remember
when ++i was faster than i++" and they'll wonder if Mom and Dad were
right when they talked about putting you in a rest home.
Cheers,
tedd
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