Indexable.numElements
return the number of elements in the collection
Indexable.size
return the size of the collection
Calling Sequence
Description
Examples
int numElements( ) throws MapleException
int size( )
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.
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 ):" );
}
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
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