create a new ExpSeq - Maple Help

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Engine.newExpseq - create a new ExpSeq

Calling Sequence

Expseq newExpseq( int length ) throws MapleException




length of the expression sequence to be returned



The newExpseq method creates a new Maple expression sequence of length length.  The expression sequence is represented with a Expseq object.


The elements of the expression sequence must be initialized and the unique member function must be called before it can be passed into a Java Open Maple function.


Errors that occur within the Maple session are reported via errorCallBack, other errors are raised as a MapleException.


import com.maplesoft.openmaple.*;

import com.maplesoft.externalcall.MapleException;

class Example


    public static void main( String notused[] ) throws MapleException


    String mapleArgs[];

    Engine engine;

    Expseq e;

    mapleArgs = new String[1];

    mapleArgs[0] = "java";

    engine = new Engine( mapleArgs, new EngineCallBacksDefault(),

        null, null );

    e = (Expseq)engine.newExpseq( 3 );

    e.assign( 1, engine.newNumeric( 12345 ) );

    e.assign( 2, engine.newNumeric( 1.8 ) );

    e.assign( 3, engine.newNumeric( 1./3 ) );

    e = (Expseq)e.unique();

    System.out.println( e );



Executing this code produces the following output.

[12345, 1.80000000000000004, .333333333333333315]

See Also

exprseq, ExternalCalling/Java/MapleException, OpenMaple, OpenMaple/Java/API, OpenMaple/Java/Engine

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