| Rev | Author | # | Line |
|---|---|---|---|
| 5 | AristotlePagaltzis | 1 | LazyEvaluation is an approach that a ProgrammingLanguage can take to evaluating expressions. With LazyEvaluation a function is passed whole expressions as arguments, and does not evaluate them until it needs their values. |
| 1 | GlynWebster | 2 | |
| 5 | AristotlePagaltzis | 3 | You could call [C]'s __&&__ and __||__ operators lazy operators: they do not always evaluate their second arguments. But this is a built-in feature of [C] and there's no way to specify user defined operators that work that way. In [Haskell] f.ex, which is the most widely used lazy functional programming language, you can. |
| 1 | GlynWebster | 4 | |
| 5 | AristotlePagaltzis | 5 | I/O is problematic in lazy languages. Lazy languages don't assume a linear flow of time: you have to model that explicitly in your programs! Programmers need to provide some way to keep I/O operations in the correct sequence; in [Haskell] this is done using a data structure called the "monad". |
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