A non-proprietary object-oriented programming language that is distributed under the GPL/LGPL license. Sather was originally based on Eiffel, but now incorporates ideas and approaches from several languages. The language is most commonly described as one that attempts to be as efficient as C, C++, or FORTRAN, and as elegant and safe as Eiffel and supports higher order functions as well as Common Lisp, or Smalltalk.
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