Its online directory of professional indexers lists qualified members available to take freelance indexing work. Indexers add array-like indexing capabilities to objects. Some indexers with expertise in controlled vocabularies also work as taxonomists and ontologists. Many of these journals are indexed by international indexers. Some publishers and database companies employ indexers. Some indexers also employ language-specific stemming on the words being indexed. Indexers are implemented through the get and set accessors for the . "Indexers and Indexes in Fact and Fiction" (2001). In C#, class methods, indexers, properties and events can all be overridden. Derwent indexers add standardized 4-letter codes to DWPI records to represent certain patent-holding companies. You can declare definitions for methods, properties, and indexers. Indexers who work in French are also given separate listings. GeneRIFs are usually produced by NCBI indexers, but anyone may submit a GeneRIF. See the American Society of Indexers website for an example. It provides training courses, conferences, a newsletter, and a directory of available indexers.