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Basic elements

Published in Oxford University Press eBooks • Apr 7, 1994
Authors:
Douglas Schenck
,
Peter W.F. Wilson

Abstract

We start with the basic stuff used to build EXPRESS: the characters you use to build ‘words’ and the different kinds of words that may appear in the source. Computer languages call these words tokens. You compose characters according to syntax rules to form different kinds of tokens. In turn, tokens...

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