Smalltalk Vs Eiffel

Both:

• Allow only a single, GlobalNamespace
• Lack support for method name polymorphism
• Have limited visibility in the current job marketplace
• Both were (largely) designed by fellows with notoriously strong opinions (and who both rather dislike C++)
• Strong notions of "pure" OO - objects are the only first-class entities. (Basic types, such as integers and booleans are treated as objects.)

SmalltalkLanguage:

• Is usually run from ByteCode's
• DynamicTyping
• Only supports single inheritance
• Classes are themselves objects, and are first class.

EiffelLanguage:

• DesignByContract
• Typically compiled to native code
• StaticTyping (ManifestTyping, not TypeInference). Full featured type system (with a few notable flaws)
• Supports multiple inheritance.
• Classes are not objects, and are second class.

---

Contributors: AluoNowu, SeanOleary

---

CategoryProgrammingLanguageComparisons CategorySmalltalk CategoryEiffel