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Question about closures and higher-order functionsI’m confused about the relation between closures and the implementation of higher-order functions. My understanding is that closures were first used to implement higher-functions in Scheme and that closures play the same role in languages such as Perl and Python. Other functional languages don’t appear to make explicit mention of closures. In my own experience with the language K, I can directly pass and return functions to and from other functions, with no reference to a lexical closure. So I’m tempted to conclude that closures are simply one technique for implementing higher on functions. However I read in CTM: Higher-order programming is the collection of programming techniques that become available when using procedure values in programs. Procedure values are also known as lexically-scoped closures. Can anyone give me some insight here, or just a reference for further study? By A B Carter at 2006-12-24 18:17 | LtU Forum | previous forum topic | next forum topic | other blogs | 10405 reads
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