Indexable.numElements - Maple Programming Help

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Home : Support : Online Help : Programming : OpenMaple : Java Application Programming Interface : Indexable Class : OpenMaple/Java/Indexable/numElements

Indexable.numElements

return the number of elements in the collection

Indexable.size

return the size of the collection

 

Calling Sequence

Description

Examples

Calling Sequence

int numElements( ) throws MapleException

int size( )

Description

• 

The numElements function returns the number of elements stored within the collection corresponding to the Indexable.

• 

The size function behaves identically to numElements but does not throw a MapleException.

Examples

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 );

        Indexable ind;

        ind = (Indexable)engine.evaluate( "[1,2,3,4]:" );

        System.out.println( "Size of list: " + ind.numElements() );

        ind = (Indexable)engine.evaluate( "{3,7,9,11,13}:" );

        System.out.println( "Size of set: " + ind.numElements() );

        ind = (Indexable)engine.evaluate( "table([ 2 = 3, 4 = \"somestring\", 5 = Pi/2 ]):" );

        System.out.println( "Size of table: " + ind.numElements() );

        ind = (Indexable)engine.evaluate( "Array( 1..3, 1..3, (i,j)->(i*j)+1 ):" );

        System.out.println( "Size of Array: " + ind.numElements() );

        ind = (Indexable)engine.evaluate( "Array( 10..30, 13..15, 11..17, (i,j)->(i*j)+1 ):" );

        System.out.println( "Size of Array: " + ind.numElements() );

    }

}

Executing this code produces the following output:

Size of list: 4

Size of set: 5

Size of table: 3

Size of Array: 9

Size of Array: 441

See Also

ExternalCalling/Java/MapleException

OpenMaple

OpenMaple/Java/Algebraic

OpenMaple/Java/API

OpenMaple/Java/Indexable

OpenMaple/Java/Indexable/max

OpenMaple/Java/Indexable/member

OpenMaple/Java/Indexable/min

OpenMaple/Java/Indexable/toList

OpenMaple/Java/Indexable/toSet