Cobra (programming language)

Cobra
Paradigm	Multi-paradigm: object-oriented
Designed by	Charles Esterbrook
Developer	Cobra Language LLC
First appeared	2006; 19 years ago
Final release	0.9.6 / December 23, 2013; 11 years ago
Typing discipline	strong, static, dynamic, inferred
OS	Microsoft .NET, Mono
License	MIT
Filename extensions	.cobra
Website	cobra-language.com
Influenced by
	Python, Eiffel, C#, Objective-C

Cobra is a discontinued general-purpose, object-oriented programming language.^[1] Cobra is designed by Charles Esterbrook, and runs on the Microsoft .NET and Mono platforms.^[2] It is strongly influenced by Python, C#, Eiffel, Objective-C, and other programming languages.^[3] It supports both static and dynamic typing.^[4]^[5] It has support for unit tests and contracts.^[4] It has lambda expressions, closures, list comprehensions, and generators.^[6]

Cobra is an open-source project; it was released under the MIT License on February 29, 2008.^[7]^[8]

Features

Object-oriented

Namespaces
Classes, interfaces, structs, extensions, enumerations
Methods, properties, indexers
Mixins, extension methods
Generics, attributes

Quality control

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] and I am [_age] years old.'

References

^ "The Cobra Programming Language". Cobra Language LLC. Retrieved 2012-09-26.
^ Charles Esterbrook (Jan 28, 2008). Lang.NET Symposium 2008 – The Cobra Programming Language. Microsoft. Archived from the original (wmv) on March 26, 2009. Retrieved 2010-08-31.
^ Bridgwater, Adrian (5 March 2008). "Cobra takes a bite at open source". ZDNet UK. Retrieved 2010-08-31.
^ ^a ^b Neward, Ted (June 2009). "Reaping the Benefits of Cobra". MSDN Magazine.
^ Erickson, Jonathan (April 2008). "Was George Costanza a Computer Programmer?". Dr. Dobb's Journal.
^ Morris, Richard (April 2010). "Chuck Esterbrook: Geek of the Week". Simple-talk.
^ Krill, Paul (Feb 7, 2008). "Cobra language slithering to open source". InfoWorld. Retrieved 2010-08-31.
^ "The Cobra Programming Language". Cobra Language LLC. Retrieved 2008-02-29.

External links

[1] "The Cobra Programming Language". Cobra Language LLC. Retrieved 2012-09-26.

[langnet2008-2] Charles Esterbrook (Jan 28, 2008). Lang.NET Symposium 2008 – The Cobra Programming Language. Microsoft. Archived from the original (wmv) on March 26, 2009. Retrieved 2010-08-31.

[3] Bridgwater, Adrian (5 March 2008). "Cobra takes a bite at open source". ZDNet UK. Retrieved 2010-08-31.

[msdn_magazine-4] Neward, Ted (June 2009). "Reaping the Benefits of Cobra". MSDN Magazine.

[5] Erickson, Jonathan (April 2008). "Was George Costanza a Computer Programmer?". Dr. Dobb's Journal.

[6] Morris, Richard (April 2010). "Chuck Esterbrook: Geek of the Week". Simple-talk.

[infoworld2008-7] Krill, Paul (Feb 7, 2008). "Cobra language slithering to open source". InfoWorld. Retrieved 2010-08-31.

[8] "The Cobra Programming Language". Cobra Language LLC. Retrieved 2008-02-29.

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