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//! # rdf-rs
//!
//! A crate for the Resource Description Framework (RDF) and SPARQL.
//!
//! ---
//!
//! This crate enables to parse certain RDF formats to an RDF graph, as well as writing
//! an RDF graph as RDF syntax.
//!
//! Currently supported RDF formats are:
//!
//! * Turtle
//! * N-Triples
//!
//!
//! ## Usage
//!
//! Each module contains a comprehensive documentation with usage examples.
//! In the following, only the basic functionality is introduced.
//!
//! RDF triples can be stored and represented in a graph.
//!
//! ```
//! use rdf::graph::Graph;
//! use rdf::uri::Uri;
//! use rdf::triple::Triple;
//!
//! let mut graph = Graph::new(None);
//!
//! let subject = graph.create_blank_node();
//! let predicate = graph.create_uri_node(&Uri::new("http://example.org/show/localName".to_string()));
//! let object = graph.create_blank_node();
//! let triple = Triple::new(&subject, &predicate, &object);
//!
//! graph.add_triple(&triple);
//! ```
//!
//! RDF graphs can be serialized to a supported format.
//!
//! ```
//! use rdf::writer::n_triples_writer::NTriplesWriter;
//! use rdf::writer::rdf_writer::RdfWriter;
//! use rdf::graph::Graph;
//! use rdf::uri::Uri;
//! use rdf::triple::Triple;
//!
//! let writer = NTriplesWriter::new();
//!
//! let mut graph = Graph::new(None);
//! let subject = graph.create_blank_node();
//! let predicate = graph.create_uri_node(&Uri::new("http://example.org/show/localName".to_string()));
//! let object = graph.create_blank_node();
//! let triple = Triple::new(&subject, &predicate, &object);
//!
//! graph.add_triple(&triple);
//!
//! assert_eq!(writer.write_to_string(&graph).unwrap(),
//! "_:auto0 <http://example.org/show/localName> _:auto1 .\n".to_string());
//! ```
//!
//! RDF syntax can also be parsed and transformed into an RDF graph.
//!
//! ```
//! use rdf::reader::turtle_parser::TurtleParser;
//! use rdf::reader::rdf_parser::RdfParser;
//! use rdf::uri::Uri;
//!
//! let input = "@base <http://example.org/> .
//! @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
//! @prefix foaf: <http://xmlns.com/foaf/0.1/> .
//!
//! <http://www.w3.org/2001/sw/RDFCore/ntriples/> rdf:type foaf:Document ;
//! <http://purl.org/dc/terms/title> \"N-Triples\"@en-US ;
//! foaf:maker _:art .";
//!
//! let mut reader = TurtleParser::from_string(input.to_string());
//!
//! match reader.decode() {
//! Ok(graph) => {
//! assert_eq!(graph.count(), 3);
//! assert_eq!(graph.namespaces().len(), 2);
//! assert_eq!(graph.base_uri(), &Some(Uri::new("http://example.org/".to_string())))
//! },
//! Err(_) => assert!(false)
//! }
//! ```
use result;
pub type Result<T> = Result;