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I am still wobbly on the skates myself but I will stick my neck out.
Yes it could be any letter as long as you are consistent with it in
the code at hand.
As used in your example it is a actually a counter.
We could use 'i' as the variable in any way we wanted but we don't
in order to avoid confusing ourselves.
Conventionally 'i' is used as the variable for counters and the
opening statement in counting type scenarios sets or intialises the
counter
(say you have been using the counter before, in some languages it
will still be set to what it was when last used so conventionally it
is wise to reset or initialise to begin with as well as needing to
do that anyway to walk through the task at hand).
"i" is generally used for counters because it comes from the word
integer as in:
start off counting with the integer (i) set to zero;
do the task and add 1 to 'i' the counter (=1);
do the task again and add another 1 to the counter (=2);
when you count to 20 you can stop and go on with the next part of
the job.
Note, that is not what the code example you quoted is doing.
I have only given a very crude example of what "i" is basically all
about.
The counter in AFL is a little more sophisticated than some others
but that is another story.
BrianB2.
--- In amibroker@xxxxxxxxxxxxxxx, allansn@xxx wrote:
>
> Steve,
> Your input is appreciated and I will do precisely what you
stated,but I still would like a reference that would enable me to
undesrstand what is second nature to you..
> For instance,I dont know what the "i" stands for in the code.Most
of the examples reference the letter "i".I am slowly getting
postfix and prefix,but its the things like the use of "i" that
leave me confused.Could it be any letter??Does "i" have special
meaning in programming..I dont want to bother the board members,so i
am hoping a beginning book may answer the basic questions
>
> ----- Original Message -----
> From: scourt2000 <stevehite@xxx>
> Date: Sunday, July 23, 2006 6:09 pm
> Subject: [amibroker] Re: I am lostII
> >
> > > How would one become proficient/knowledgable in writing code
> > such
> > as this???
> >
> > By understanding that the Buy[] array is not true ONLY on the
bar
> > where the first buy signal occurred in a trade.
> >
> > Required reading with 100% comprehension:
> >
> > 1. Tutorial in the docs on "Understanding how AFL works"
> >
> > When you fully understand this document, it is easy to see how
> > excessive buy/sell signals get generated. AFL works on arrays
of
> > data and compares the indices of that data in a parallel manner
to
> > other arrays of data in your AFL expressions and statements.
> >
> > Required understanding:
> >
> > 2. How the exrem() function works. In the code below, Tomasz's
> > example is walking through the Buy[] array which contains
> > excessive
> > buy signals. He's only interested in the first one that
triggered
> > and has to ignore the excessive signals for a respective trade
> > sequence.
> >
> > AFL looks on the surface like a small C-like language and, in
many
> > ways, it is. However, its real power is based upon the
> > fundamental
> > understanding that it takes care of processing arrays upon
arrays
> > of
> > data for you "behind the scenes" so you don't have to write a
> > bunch
> > of for() loops to get your work accomplished.
> >
> > You're getting stopped (mentally) by the code below not because
of
> > your inexperience with programming, but because of the two
> > fundamental things about AFL I mentioned above.
> >
> > Steve
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, allansn@ wrote:
> > >
> > > Hi Terry,
> > > Noticed you reccomended these 2 books...I have absolutely no
> > problem coding in Amibroker,but I do run into problems with
coding
> > such as this..
> > > for( i = 0; i < *BarCount*; i++ )
> > > {
> > > if( priceatbuy == 0 *AND* *Buy*[ i ] )
> > > {
> > > priceatbuy = *BuyPrice*[ i ];
> > >
> > > How would one become proficient/knowledgable in writing code
> > such
> > as this???
> > > Is this AFL??? or
> > > Is this sort of language inherent in every language?
> > > Would either of the 2 books you reccomended assist me in this
task?
> > > If you or anyone could point me in the direction of
a "Dummies "
> > book,that would be great.I would just like to be proficient at
> > writing/understanding code such as the snippet above
> > >
> > > Someone reccomended Beggining Programming for Dummies by
Wang...
> > >
> > > Any thoughts deeply appreciated
> > >
> > > Allan
> > >
> > >
> > >
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: Terry <MagicTH@>
> > > Date: Sunday, July 16, 2006 9:34 pm
> > > Subject: RE: [amibroker] Re: I am lost
> > > > Great book for macro and function coding:
> > > > http://www.wrox.com/WileyCDA/WroxTitle/productCd-
> > 0764543717.html
> > > >
> > > > Excel for Dummies:
> > > > http://www.amazon.com/gp/product/1568840500/sr=1-
> > > > 1/qid=1153099963/ref=sr_1_1/104-1895807-
> > 1075905?ie=UTF8&s=books
> > > >
> > > >
> > > >
> > > > --
> > > >
> > > > Terry
> > > >
> > > > -----Original Message-----
> > > > From: amibroker@xxxxxxxxxxxxxxx
> > [mailto:amibroker@xxxxxxxxxxxxxxx] On
> > > > Behalf Of MillowenaJuno
> > > > Sent: Sunday, July 16, 2006 08:36
> > > > To: amibroker@xxxxxxxxxxxxxxx
> > > > Subject: Re: [amibroker] Re: I am lost
> > > >
> > > >
> > > >
> > > > Hi Ton!
> > > >
> > > >
> > > >
> > > > Is there a Programming Excel for Dummies?
> > > >
> > > >
> > > >
> > > > Thanks!
> > > >
> > > >
> > > >
> > > > Millowena
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
> >
> >
> >
>
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