Abc Programming Language

ABC has only five basic Datatype s; Strong Typing , yet without need for declarations; explicit support for top-down programming; statement nesting by Indentation . It provides Infinite Precision Arithmetic , unlimited sized lists and strings, and other features supporting orthogonality and ease of use by novices. Its designers claim that ABC programs are typically around a quarter the size of the equivalent Pascal or C programs, and more readable.

ABC was originally a monolithic implementation, leading to an inability to adapt to new requirements, such as creating a Graphical User Interface . ABC could not directly access the underlying file system and operating system.

ABC includes a programming environment with Syntax-directed Editing , suggestions, Persistent Variable s, and multiple workspaces.

ABC is available as an Interpreter / Compiler , currently version 1.05.02. ABC has been ported to Unix , DOS , Atari , and Apple Macintosh .

ABC also had a major influence on the design of the Python Programming Language ; Guido Van Rossum , who developed Python, previously worked for several years on the ABC system in the early 1980s [http://www.onlamp.com/lpt/a/2431 .

EXAMPLE

An example function words to collect the set of all words in a document:

HOW TO RETURN words document:
PUT {} IN collection
FOR line IN document:
FOR word IN split line:
IF word not.in collection:
INSERT word IN collection
RETURN collection

REFERENCES

EXTERNAL LINKS

A Short Introduction to the ABC Language

Books

ABC Programmer's Handbook

Information About

Abc Programming Language