/**
 * compactObject
 * =============
 * Simple port of Underscore Array's compact function. You need to replace _.trim function if underscore.string it's not included.
 */

_.mixin({
    compactObject: function(to_clean) {
        _.map(to_clean, function(value, key, to_clean) {
            if ( !!!value || (_.isString(value) && _.trim(value).length === 0)) {
                delete to_clean[key];
            }
        });
        return to_clean;
    }
});