| The J programming laguage is rich in mathematical functionality and ideally suited to analytical computing methods. It is, however, a somewhat terse language and not entirely intuitive at first, particularly if one is used to more conventional programming languages such as C, Pascal or Java. J functions (called verbs) are denoted by punctuation symbols. New functions can be developed by combining sequences of existing verbs into phrases. The compositional rules of J govern how the functions are combined and thus how they are applied to data objects. Conjunctions provide the programmer with additional control over the behavior of verbs and the composition of phrases.
The J programming language was conceived by Kenneth Iverson (also the author of APL) and Roger Hoi in 1991 (note that J is not in anyway related to Java). It is an interpretive language written in C. It is, therefore, highly portable and can run on a number of architectures and operating systems. Architectures currently supported are Intel, PowerPC and ARM, as well as 64 bit AMD. There are runtime versions of J for a number of Unix variants, such as Linux, Mac OS X, and Solaris, for example. Windows and Windows CE are also supported. |
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