EntityQ732089· pop 39· linked from 272 articles

Q732089

programming language

Key facts

Paradigm: Multi-paradigm : object-oriented , class-based , generic , concurrent
Designed by: Bertrand Meyer
Developer: Eiffel Software
First appeared: 1986 ; 40 years ago ( 1986 )
Stable release: EiffelStudio 25.12 / 26 January 2026 ; 4 months ago ( 2026-01-26 )
Typing discipline: static
Implementation language: Eiffel
Platform: Cross-platform
Os: FreeBSD , Linux , macOS , OpenBSD , Solaris , Windows
License: dual and enterprise
Filename extensions: .e
Website: eiffel .org

via Wikipedia infobox

Article

Eiffel is an object-oriented programming language designed by Bertrand Meyer (an object-orientation proponent and author of Object-Oriented Software Construction) and Eiffel Software. Meyer conceived the language in 1985 with the goal of increasing the reliability of commercial software development. The first version was released in 1986. In 2005, the International Organization for Standardization (ISO) released a technical standard for Eiffel.

The design of the language is closely connected with the Eiffel programming method. Both are based on a set of principles, including design by contract, command–query separation, the uniform-access principle, the single-choice principle, the open–closed principle, and option–operand separation.