The best way to hide empty columns, on and after, datatables initialization

fnHideEmptyColumns.js

$.fn.dataTableExt.oApi.fnHideEmptyColumns = function ( oSettings, tableObject )
{ 
    /**
     * This plugin hides the columns that are empty.
     * If you are using datatable inside jquery tabs
     * you have to add manually this piece of code
     * in the tabs initialization
     * $("#mytable").datatables().fnAdjustColumnSizing();
     * where #mytable is the selector of table 
     * object pointing to this plugin.
     * This plugin can be invoked from 
     * fnInitComplete callback.
     * @author John Diaz
     * @version 1.0
     * @date 06/28/2013
     */
    var selector = tableObject.selector; 
    var columnsToHide = [];

    $(selector).find('th').each(function(i) {

        var columnIndex = $(this).index(); 
        var rows = $(this).parents('table').find('tr td:nth-child(' + (i + 1) + ')'); //Find all rows of each column  
        var rowsLength = $(rows).length;
        var emptyRows = 0; 

        rows.each(function(r) { 
            if (this.innerHTML == '') 
                emptyRows++; 
        });  

        if(emptyRows == rowsLength) { 
            columnsToHide.push(columnIndex);  //If all rows in the colmun are empty, add index to array
        }  
    }); 
    for(var i=0; i< columnsToHide.length; i++) {
        tableObject.fnSetColumnVis( columnsToHide[i], false ); //Hide columns by index
    }
    /**
     * The following line doesn't work when the plugin 
     * is used inside jquery tabs, then you should
     * add manually this piece of code inside
     * the tabs initialization where ("#myTable") is 
     * your table id selector 
     * ej: $("#myTable").dataTable().fnAdjustColumnSizing();
     */

    tableObject.fnAdjustColumnSizing();
}

// Plugin usage: 

"fnInitComplete": function () { 
    /**
     * Go to plugin definition for
     * instructions on how to use.
     */ 
    this.fnHideEmptyColumns(this);
}