Eiffel is an ISO-standardized, object-oriented programming language designed by Bertrand Meyer ( an object-orientation proponent and author of Object-Oriented Software Construction ) and Eiffel Software.

The design of the language is closely connected with the Eiffel programming method.

The design goal behind the Eiffel language, libraries, and programming methods is to enable programmers to create reliable, reusable software modules.

Several other programming languages incorporate elements first introduced in Eiffel.

Sather, for example, was originally based on Eiffel but has since diverged, and now includes several functional programming features.

To put it in the language of other object-oriented programming languages, all Eiffel fields are " private ", and " setters " are needed to modify values.

* EiffelStudio, a development environment for the Eiffel programming language

Java applets were introduced in the first version of the Java language in 1995, and are written in programming languages that compile to Java bytecode, usually in Java, but also in other languages such as Jython, JRuby, or Eiffel ( via SmartEiffel ).

Originally, it was based on Eiffel, but it has diverged, and now includes several functional programming features.

The term was coined by Bertrand Meyer in connection with his design of the Eiffel programming language and first described in various articles starting in 1986 and the two successive editions ( 1988, 1997 ) of his book Object-Oriented Software Construction.

* SCOOP ( software ), the Simple Concurrent Object-Oriented Programming extension for concurrent programming in the Eiffel programming language

* EiffelStudio for the Eiffel programming language

The compilers for some high-level programming languages ( e. g. Eiffel, Esterel ) gain portability by outputting source code in another high level intermediate language ( such as C ) for which compilers for many platforms are generally available.

D has redesigned some C ++ features and has been influenced by concepts used in other programming languages, such as Java, Python, Ruby, C #, and Eiffel.

It was devised by Bertrand Meyer as part of his pioneering work on the Eiffel programming language.

He created the Eiffel programming language.

* Eiffel programming language

Nice aims to be feature-rich, and as such, in addition to the common features of modern object-oriented programming languages, it implements contracts in the style of Eiffel, class extensibility through multimethods, and many concepts drawn from functional programming such as anonymous functions, tuples, pattern matching (“ value dispatch ”), and parametric polymorphism.

Other on-board programming languages include purpose-made languages, variants of Eiffel, Forth, and Lisp, and Command Script facilities which are similar in function to batch / shell programming and other glue languages on computers but generally not as full featured.

So, programming languages that provide full native support for design by contract, such as Eiffel and D, will also provide full support for class invariants.

New language design ideas, particularly through the Ecma / ISO standardization process, continue to be incorporated into the Eiffel language.

The key characteristics of the Eiffel language include:

Four other open source implementations are available: " The Eiffel Compiler " tecomp, Gobo Eiffel, SmartEiffel — the GNU implementation, based on an older version of the language — and Visual Eiffel.

The Eiffel language definition is an international standard of the ISO.

The SmartEiffel team has turned away from this standard to create its own version of the language, which they believe to be closer to the original style of Eiffel.

* Eiffel Encryption Library: Open source cryptography library for the Eiffel language

It is probably best to view it as an object-oriented language, with many ideas borrowed from Eiffel.

* EiffelStudio for the Eiffel language

Genericity facilities have existed in high-level languages since at least the 1970s in languages such as CLU and Ada, and were subsequently adopted by many object-based and object-oriented languages, including BETA, C ++, D, Eiffel, Java, and DEC's now defunct Trellis-Owl language.

BETA is a strongly typed language like Simula, Eiffel and C ++, with most type checking done at compile-time.

The Director of Documentation for what was then the Société nouvelle d ' exploitation de la tour Eiffel ( SNTE ), Stéphane Dieu, commented in January 2005, " It is really just a way to manage commercial use of the image, so that it isn't used in ways we don't approve.

* Bertrand Meyer: < cite > Standard Eiffel </ cite > ( revision of preceding entry ), ongoing, 1997 – present, at < cite > Bertrand Meyer's ETL3 page </ cite >, and

* Eiffel ( company ), successor of Gustave Eiffel's engineering company

* Gustave Eiffel ( 1832 – 1923 ), engineer and designer of the Eiffel Tower

* Eiffel ( band ), a French rock group

Languages that support multiple inheritance include: C ++, Common Lisp ( via Common Lisp Object System ( CLOS )), EuLisp ( via The EuLisp Object System TELOS ), Curl, Dylan, Eiffel, Logtalk, Object REXX, Scala ( via use of mixin classes ), OCaml, Perl, Perl 6, Python, and Tcl ( via Incremental Tcl ( Incr Tcl )).

Visitors can peek inside port windows and see mannequins of Edison and Eiffel ( and Eiffel's daughter, posed with the phonograph ), the tableau commemorating their fabled meeting of September 10, 1899 in which, over cigars and cognac, they discussed possible joint projects and their participation in Jules Verne's " smoking club " for avowed futurists, dubbed Plus Ultra.

:: Keen returns to Earth only to find the Vorticon mothership hovering above with its deadly X-14 Tantalus Ray cannons locked on to eight of Earth's greatest landmarks: Big Ben ( London ), the Sphinx ( Cairo ), the Sydney Opera House ( Sydney ), the Statue of Liberty ( New York ), the Eiffel Tower ( Paris ), the Colosseum ( Rome ), St Basil's Cathedral ( Moscow ), and the White House ( Washington D. C .).

The earliest architectural efforts around the city focused on classical European designs such as the Central Train Station ( CFM ) designed by architects Alfredo Augusto Lisboa de Lima, Mario Veiga and Ferreira da Costa and built between 1913 and 1916 ( sometimes mistaken with the work of Gustav Eiffel ), and the Hotel Polana designed by Herbert Baker.

During the following years, Hackett performed a number of jumps from bridges and other structures ( including the Eiffel Tower ), building public interest in the sport, and opening the world's first permanent commercial bungee site ; the Kawarau Bridge Bungy at Queenstown in the South Island of New Zealand.

The project used of concrete ( mainly for the dam wall ), 463, 000 tonnes of steel ( enough to build 63 Eiffel Towers ) and moved about of earth.

According to figures from 2003, some popular tourist sites include ( in visitors per year ): Eiffel Tower ( 6. 2 million ), Louvre Museum ( 5. 7 million ), Palace of Versailles ( 2. 8 million ), Musée d ' Orsay ( 2. 1 million ), Arc de Triomphe ( 1. 2 million ), Centre Pompidou ( 1. 2 million ), Mont-Saint-Michel ( 1 million ), Château de Chambord ( 711, 000 ), Sainte-Chapelle ( 683, 000 ), Château du Haut-Kœnigsbourg ( 549, 000 ), Puy de Dôme ( 500, 000 ), Musée Picasso ( 441, 000 ), Carcassonne ( 362, 000 ).