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