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Wrong!
One line is parsed/executed ONCE, REGARDLESS of number of BARS under test.
So your 50000 bar backtest will STILL consume 0.0000001 sec (0.1 microsec) for your comment.
Note also that this measurement was done long time ago and on your modern computers
timings should be ~5 times less.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Dennis Brown" <see3d@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, August 05, 2008 9:44 PM
Subject: Re: [amibroker] Re: AFL programming style questions comments /* */ vs. //
> Tuzo, Joe,
>
> So if I understand this correctly, in my code I use many loops for
> complex functions and comment many lines because of the complexity.
> If each line I comment takes 100 ns and I am running a 50,000 bar
> backtest, I could end up with 800 ms of time wasted in // comments!
>
> Since the /* */ comments are removed once when the formula is loaded,
> they are not going to affect these times.
>
> I don't think I am wasting that much time in // comments though,
> because that would mean that half my execution time was skipping
> comments and I don't think that is reasonable. Looking over some of
> my loops, I can see that I kept the comments on lines inside the loops
> to a minimum.
>
> Still, I would like to comment my code freely without thinking that my
> comments are hurting the execution speed.
>
> That means that I need to use /* */ comments for code unless the //
> EOL comments are also removed once when loaded.
>
> BR,
> Dennis
>
> On Aug 5, 2008, at 3:25 PM, tuzo_wilson wrote:
>> Joseph,
>>
>> Thanks for digging that up...my Yahoo search came up empty.
>>
>> If I'm reading the above correctly, C++ style comments are actually
>> *faster* than C style (for a single line). /* */ block comments over
>> multiple lines may be faster in that scenario.
>>
>> Either way, those numbers are quite small so, IMO, it would be better
>> to use C++ // style comments exclusively. Then in the case when
>> debugging is required whole code blocks can easily be commented out
>> with /* */ comments.
>>
>>
>> Tuzo
>
>
>> --- In amibroker@xxxxxxxxxxxxxxx, "J. Biran" <jbiran@xxx> wrote:
>>>
>>> It was first mentioned in release notes for AB 4.88. also
>>> quoting from another message:
>>>> -----Original Message-----
>>>> From: AmiBroker-at@xxxxxxxxxxxxxxx On Behalf Of Tomasz
>>> Janeczko
>>>> Sent: Friday, October 20, 2006 12:32 PM
>>>> To: AmiBroker-at@xxxxxxxxxxxxxxx
>>>> Subject: Re: [AmiBroker-at] Re: Conditional #include
>>>>
>>>> Hello,
>>>>
>>>> I took a look at code part that handles comments and
>>> improved
>>>> it now, so single line of /* */ comment takes now 0.14
>>> microseconds,
>>>> when single line of // comment takes 0.10 microseconds.
>>>>
>>>> Best regards,
>>>> Tomasz Janeczko
>>>> amibroker.com
>>>
>>> I am glad I bothered searching for the original information.
>>> I somehow remembered the numbers were in milliseconds not
>>> microseconds. Ok, I will be able to sleep better now ;)
>>
>
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> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
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>
>
>
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