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Hello,
A new beta version (4.32.1) 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/ab4321beta.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
Best regards,Tomasz Janeczkoamibroker.com
AmiBroker 4.32.1 Beta Read Me
April 19, 2003 21:01
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 4.32.1 beta" written in the
About box.
CHANGES FOR VERSION
4.32.1 (as compared to 4.32.0)
garbage collector was releasing memory too soon in some cases, now fixed.
CHANGES FOR VERSION
4.32.0 (as compared to 4.31.1)
added type check in IF/ELSE statements
added type check in array element assignment
error messages now numbered and display changed slightly
you can break running loop by pressing Shift+BREAK (Pause) key combination
calling COM objects works again (was broken in 4.31.x)
changed slightly the way TAB works in editor, if TAB is pressed any
selection is deselected to avoid accidential deletion of text
experimental: added 'agressive garbage collector' that extremely
decreases the amountof memory required to run AFL formula by releasing the
memoryused for temporary variables as soon as possible
(previouslytemporary memory was released at the end of formula
execution).A side-effect of new garbage collector is some speed up in
formula execution.
new tab in preferences for AFL engine settings
experimental feature, NOT for beginners, may be removed/modified in
future releases: new _TRACE( "string" ) AFL function addedthat
allows to write debug messages from AFL code to system debug viewer.(it
calls internally OutputDebugString Win API function).To view debug
messages you have to run DebugView freeware program from
http://www.sysinternals.com/
CHANGES FOR VERSION
4.31.1 (as compared to 4.31.0)
fixed bug introduced in 4.31.0 causing no text output in
commentary/interpretation
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 <A
href="">bugs@xxxxxxxxxxxxx
Yahoo! Groups Sponsor
Send BUG REPORTS to bugs@xxxxxxxxxxxxx
Send SUGGESTIONS to suggest@xxxxxxxxxxxxx
-----------------------------------------
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(Web page: http://groups.yahoo.com/group/amiquote/messages/)
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