Cobra is a discontinued general-purpose, object-oriented

programming language A programming language is a system of notation for writing computer programs. Programming languages are described in terms of their Syntax (programming languages), syntax (form) and semantics (computer science), semantics (meaning), usually def ...

. Cobra is designed by Charles Esterbrook, and runs on the Microsoft .NET and Mono platforms. It is strongly influenced by Python, C#, Eiffel,

Objective-C Objective-C is a high-level general-purpose, object-oriented programming language that adds Smalltalk-style message passing (messaging) to the C programming language. Originally developed by Brad Cox and Tom Love in the early 1980s, it was ...

, and other programming languages. It supports both static and dynamic typing. It has support for unit tests and contracts. It has lambda expressions, closures, list comprehensions, and generators. Cobra is an open-source project; it was released under the

MIT License The MIT License is a permissive software license originating at the Massachusetts Institute of Technology (MIT) in the late 1980s. As a permissive license, it puts very few restrictions on reuse and therefore has high license compatibility. Unl ...

on February 29, 2008.

Features

;Object-oriented: :* Namespaces :*

Class Class, Classes, or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used d ...

es, interfaces, structs, extensions, enumerations :* Methods, properties, indexers :* Mixins, extension methods :* Generics, attributes ;Quality control: :*

Contracts A contract is an agreement that specifies certain legally enforceable rights and obligations pertaining to two or more parties. A contract typically involves consent to transfer of goods, services, money, or promise to transfer any of thos ...

, assertions :* Unit tests, docstrings :* Compile-time nil-tracking ;Expressiveness: :* Static and dynamic binding :* List, dictionary, and set literals :* in and implies operator :* for expressions :* Slicing :* Interpolated strings :* Compile-time type inference :* Lambdas and closures ;General productivity: :* Exception handling :* Postmortem exception report :* Garbage collection ; Scripting conveniences: :* Clean syntax :* Dynamic binding :* One-step run :* Shebang line (#!) ;Miscellaneous: :* Documentation tool (cobra -doc) :* Syntax highlighting tool (cobra -highlight)

Examples

The following examples can be run from a file using cobra <filename>.

Hello World

class Hello def main print 'HELLO WORLD'

A simple class

class Person var _name as String var _age as int cue init(name as String, age as int) _name, _age = name, age def toString as String is override return 'My name is

name A name is a term used for identification by an external observer. They can identify a class or category of things, or a single thing, either uniquely, or within a given context. The entity identified by a name is called its referent. A person ...

and I am ageyears old.'

References

External links

*
The Cobra blog
by Charles Esterbrook
Cobra News Index
{{Common Language Infrastructure .NET programming languages Object-oriented programming languages Programming languages created in 2006 Software using the MIT license