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Excellent Tomasz, can't thank you enough - This may
be my favorite upgrade yet!
What is next? - developers buying AFL to build their apps
instead of "plain old" C++? Stroustrup is probably calling a high-level
strategy meeting as we speak! : - )
Steve
PS - Should I retire my DLL now? - Is my "15 minutes" up
already? : - )
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Tomasz Janeczko
To: <A title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Sunday, April 13, 2003 10:06
AM
Subject: AmiBroker 4.31.1 BETA released,
was [amibroker] AmiBroker 4.31.0 BETA released
Hello,
A new version 4.31.1 BETA is available now
for download from:
<A
href="">http://www.amibroker.com/members/bin/ab4311beta.exe
It fixes bug introduced in 4.31.0 that caused no text
output
in commentary/interpretation window.
Best regards,Tomasz Janeczkoamibroker.com
<BLOCKQUOTE
>
----- Original Message -----
<DIV
>From:
Tomasz Janeczko
To: <A title=amibroker@xxxxxxxxxxxxxxx
href="">amibroker@xxxxxxxxxxxxxxx
Sent: Sunday, April 13, 2003 11:07
AM
Subject: [amibroker] AmiBroker 4.31.0
BETA released
Hello,
A new beta version (4.31.0) of AmiBroker has just been
released.
It is available for registered users only from the members
area at:
<A
href="">http://www.amibroker.com/members/bin/ab4310beta.exe
If you forgot your user name / password to the members
area
you can use automatic reminder service at: <A
href="">http://www.amibroker.com/login.html
This release brings huge improvement to AFL:
for and while loops and
if-else flow control statements.
Native AFL loops run 2..3 times faster than JScript
(according to my
preliminary tests on arrays with 1000-5000
bars)
For more details and example code please read the
following "READ ME" text.
NOTE: from now on all beta releases will be available to
registered
users only (in member area).
Best regards,Tomasz
Janeczkoamibroker.com
AmiBroker 4.31.0 Beta Read Me
April 13, 2003 10:38
THIS IS AN EARLY BETA VERSION OF THE SOFTWARE. EXPECT BUGS
!!!
AGAIN: THIS IS AN EARLY BETA VERSION OF THE SOFTWARE. EXPECT BUGS
!!!
Backup your data files and entire AmiBroker folder
first!
INSTALLATION INSTRUCTIONS
IMPORTANT: This archive is update-only. You have to install full
version 4.30 first.
Just run the installer and follow the instructions.
Then run AmiBroker. You should see "AmiBroker 4.31.0 beta" written in the
About box.
CHANGES FOR VERSION
4.31.0 (as compared to 4.30.0)
Workspace window uses "icon font" set in the Windows settings instead
of hard coded Tahoma 8
for better readability and ClearType(tm) compatibility on WinXP, all
dialog windows use now 'MS Shell Dlg' face name that maps to standard MS
Sans Serif on Win 9x/Me/NT and Tahoma on Win 2K and XP.
rewritten AFL parser, now formula is parsed and coverted to syntax
tree and then interpreted. This would allow further improvements including
compilation. This allowed also to add loops/if-else statements.
implemented IF/ELSE statement, WHILE and FOR loops:The same basic
'for' loop in AFL is 2..3 times faster than in JScriptSyntax follows
C++/JScript style:
while( conditional_expression ) statement;
for( initializer_part; conditional_expression; iterator_part )
statement;
if( conditional_expression ) statement;
if( conditional_expression )
statement;elsestatement;
implemented compound statements: these are blocks of statements
enclosedin opening and closing curly brace
{statement1;statement2;...statementN;}
compound statement can appear anywhere when simple statement can.
For example:
i = 10;while( i < 20 ){Plot( MA( Close, i ), "MA"
+ WriteVal( i, 0 ), colorBlack + i );i = i + 1;}
implemented C-style postfix and prefix increment/decrement
operators
i = 10;WriteIf( i++ );WriteIf( ++i );WriteIf( i
);
implemented array element access (subscript) operator []:
WriteVal( Close[ 0 ] ); // prints the first bar of close
array
/* a sample low-level implementation of exponential moving
average in AFL */
myema[ 0 ] = Close[ 0 ];
for( i = 1; i < BarCount; i++ ){myema[ i ] = 0.1 *
Close[ i ] + 0.9 * myema[ i - 1 ];}
added built-in constant 'BarCount' that returns number of bars
available in arrays (the number of elements of array)When QuickAFL is
turned on it may be less than true number of bars because QuickAFL feature
attempts to use only visible bars (and few before). You can control how
many bars the formula requires using SetBarsRequired() function
implemented infinite-loop protection. Nice if you forgot to increment
counter variable in 'for' loop :-)
tab key now works without need to press ALT/CTRL in AFL editors
added C-like synonyms for logical ADD/OR/NOT: &&, ||, !
/* a sample low-level implementation of Profit-target stop in
AFL: */
Buy = Cross( MACD(), Signal() );
priceatbuy=0;
for( i = 0; i < BarCount; i++
){ if( priceatbuy == 0 &&
Buy[ i ] ) priceatbuy = BuyPrice[ i
];
if( priceatbuy > 0 &&
SellPrice[ i ] > 1.1 * priceatbuy
) { Sell[
i ] = 1; SellPrice[ i ] = 1.1
* priceatbuy; priceatbuy =
0; } else Sell[
i ] = 0;}
/* sample EMA rainbow */
Plot( Close, "Price", colorBlack, styleCandle );for( Range =
15; Range < 100; Range++ ) Plot( EMA( Close, Range
), "MA"+WriteVal(Range,0), colorRose + Range % 8, styleNoLabel
);
HOW TO REPORT BUGS
If you experience any problem with this beta version please send detailed
description of the problem (especially the steps needed to reproduce it) to
bugs@xxxxxxxxxxxxx
Send
BUG REPORTS to bugs@xxxxxxxxxxxxxSend SUGGESTIONS to
suggest@xxxxxxxxxxxxx-----------------------------------------Post
AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx (Web page: <A
href="">http://groups.yahoo.com/group/amiquote/messages/)--------------------------------------------Check
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href="">http://groups.yahoo.com/group/amibroker/files/groupfaq.html
Your use of Yahoo! Groups is subject to the <A
href="">Yahoo! Terms of Service.
Yahoo! Groups Sponsor
Send BUG REPORTS to bugs@xxxxxxxxxxxxx
Send SUGGESTIONS to suggest@xxxxxxxxxxxxx
-----------------------------------------
Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
(Web page: http://groups.yahoo.com/group/amiquote/messages/)
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