Expseq.select
return an element store within an expression sequence
Calling Sequence
Parameters
Description
Examples
Algebraic select( int i ) throws MapleException
i
-
index of the entry to return
The select function returns the Algebraic object stored in index i of the Expseq.
Valid values of i are 1..n where n is the length of the expression sequence. The length can be obtained by calling numElements.
import com.maplesoft.openmaple.*;
import com.maplesoft.externalcall.MapleException;
class Example
{
public static void main( String notused[] ) throws MapleException
String[] mapleArgs = { "java" };
Engine engine = new Engine( mapleArgs, new EngineCallBacksDefault(), null, null );
Expseq e = (Expseq)engine.evaluate( "seq( evalf[78](7^(1/i)), i=1..10 ):" );
int i;
for ( i = 1; i <= 10; i++ )
System.out.println( e.select(i) );
}
try
e.select(11);
catch ( MapleException me )
System.out.println( me.getMessage() );
e.select(0);
Executing this code produces the following output.
7.
2.64575131106459059050161575363926042571025918308245018036833445920106882323028
1.91293118277238910119911683954876028286243905034587576621064764044723427617923
1.62657656169778574321123234549376017301827079226949761818745558348867674117268
1.47577316159455206927691669563224410654409361374020356777090416888452176749921
1.38308755426848849264065851353482259087704273621025114871908429253975875945491
1.32046924775612379180932733150026308273660015197335825180266128835467174365289
1.27537310685845408538600975045879227345370475539677042755236132296950696193994
1.24136581701520867757662639129509362296759670055153242237508942386018682338140
1.21481404403906693939874738140509129071838803506412754355625118059503365822372
Error, bad index, 11, into expression sequence
Error, bad index, 0, into expression sequence
See Also
ExternalCalling/Java/MapleException
OpenMaple
OpenMaple/Java/Algebraic
OpenMaple/Java/API
OpenMaple/Java/Expseq
OpenMaple/Java/Expseq/assign
OpenMaple/Java/Expseq/iterator
OpenMaple/Java/Indexable
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