A+ is an open source programming language created in 1988 by Arthur Whitney.
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A+ is an array programming language descendent from the programming language A, which in turn was created to replace APL in 1988. Arthur Whitney developed the A portion of A+, while other developers at Morgan Stanley extended it, adding a graphical user interface and other language features. A+ is a high-level, interactive, interpreted language, designed for numerically intensive applications, especially those found in financial applications. Read more on Wikipedia...
'Hello, world!'