i

-

index of the entry to assign

val

-

value to assign into the expression sequence

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( "1,2,3:" );

        try

        {

            e.assign( 1, engine.newNumeric( 2.2 ) );

        }

        catch ( MapleException me )

        {

            System.out.println( me.getMessage() );

        }

        e = engine.newExpseq( 3 );

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

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

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

        e = (Expseq)e.unique();

        System.out.println( e );

    }

}

Error, expression sequences from Maple cannot be modified in-place

[1, 2, 3]