History
Walter Bright decided to start working on a new language in 1999. D was first released in December 2001, and reached version 1.0 in January 2007. The first version of the language (D1) concentrated on the imperative, object oriented and metaprogramming paradigms, similar to C++.
Dissatisfied with Phobos, D's official runtime and standard library, members of the D community created an alternative runtime and standard library named Tango. The first public Tango announcement came within days of D 1.0's release. Tango adopted a different programming style, embracing OOP and high modularity. Being a community-led project, Tango was more open to contributions, which allowed it to progress faster than the official standard library. At that time, Tango and Phobos were incompatible due to different runtime support APIs (the garbage collector, threading support, etc.). This made it impossible to use both libraries in the same project. The existence of two libraries, both widely in use, has led to significant dispute due to some packages using Phobos and others using Tango.
In June 2007, the first version of D2 was released. The beginning of D2's development signalled the stabilization of D1; the first version of the language has since been in maintenance, only receiving corrections and implementation bugfixes. D2 was to introduce breaking changes to the language, beginning with its first experimental const system. D2 later added numerous other language features, such as closures, purity, and support for the functional and concurrent programming paradigms. D2 also solved standard library problems by separating the runtime from the standard library. The completion of a D2 Tango port was announced in February 2012.
The release of Andrei Alexandrescu's book The D Programming Language on June 12, 2010 marked the stabilization of D2, which today is commonly referred to as just "D".
In January 2011, D development moved from a bugtracker / patch-submission basis to GitHub. This has led to a significant increase in contributions to the compiler, runtime and standard library.
Read more about this topic: D (programming Language)
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