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IBM has actively developed and released many innovative features for Workstation APL2 V2 ever since it was announced in 2002. They include interfaces to other languages and applications in the Microsoft Windows environment. I have tested some of them within the limitations of my knowledge of the...
There has always been a close relationship between programming language design and computer design. Electronic computers and programming languages are both 'computers' in Turing's sense. They are systems which allow the performance of bounded universal computation. Each allows any computable...
Compression algorithms are very useful for a variety of applications. Originally, their main use was what their name suggests, reducing the size of computer files without losing any information. It was interesting to see that they were equally useful for all types of files, such as text, bit...
In this article, I raise ten APL problems; each problem has a simple one line solution which does not involve the creation of any intermediate variable. The objective in solving such problems, for novices and experts alike, is to acquire new APL skills; if you can solve the problem without...
Using Red-Green-Blue triples to describe colors is common and often quite convenient. However, other color models may be more convenient or appropriate for many types of image analysis and processing. We will discuss conversion between RGB and YUV, YIQ, HSV, HLS, HSI color spaces. We create...
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