remove the element associated with a key - Maple Help

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Table.remove - remove the element associated with a key

Calling Sequence

void remove( Algebraic key ) throws MapleException

Parameters

key

-

index of the element to access

Description

• 

The remove function removes the Algebraic object associated with key from the Table.

• 

If no element is associated with key, no error is raised.

Examples

import com.maplesoft.openmaple.*;

import com.maplesoft.externalcall.MapleException;

class Example

{

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

    {

    String mapleArgs[];

    Engine engine;

    Table t;

    Numeric n;

    mapleArgs = new String[1];

    mapleArgs[0] = "java";

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

        null, null );

    t = (Table)engine.evaluate( "table([(1)=100,(2)=200,(3)=300,(4)=400]):" );

    n = engine.newNumeric( 1 );

    System.out.println( t.has( n ) );

    t.remove( n );

    System.out.println( t.has( n ) );

    n = engine.newNumeric( 2 );

    System.out.println( t.has( n ) );

    t.remove( n );

    System.out.println( t.has( n ) );

    n = engine.newNumeric( 3 );

    System.out.println( t.has( n ) );

    t.remove( n );

    System.out.println( t.has( n ) );

    t.remove( engine.newNumeric( 10 ) );

    }

}

Executing this code produces the following output.

true

false

true

false

true

false

See Also

ExternalCalling/Java/MapleException, OpenMaple, OpenMaple/Java/Algebraic, OpenMaple/Java/API, OpenMaple/Java/Table, OpenMaple/Java/Table/assign, OpenMaple/Java/Table/has, OpenMaple/Java/Table/select


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