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Hollerith and why we have digraphs in Pascal and trigraphs in C/C++ (nostalgia, Apple ][ plus)

The Wiert Corner – Some nostalgia (: In the mid 80s, when programming in UCSD Pascal and Turbo Pascal, I learned that Pascal has (. and .) digraphs that translate into [ and ], similar to the (* and *) digraphs that translate to { and }. In fact I thought the English word was bigraph (as bi- is a prefix for twice, just like tri- is a prefix for thirce). The digraphs are lexical alternatives (Pascal ISO  standard 7185:1990 paragraph 6.1.9 or Extended Pascal ISO standard 10260:1990 paragraph 6.1.11). There is even one more: the @ at-sign is a lexical alternative for the ^ caret. Back then (I was in my teens, there ...
Favorite? Off-Topic? jpluimers @ 2012-07-04 13:00

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