On Tue, 13 Nov 2007, John Lato wrote:
Hello,
I know there are several important differences between let-expressions and where-clauses regarding scoping and the restriction of "where" to a top-level definition. However, frequently I write code in which either one would be allowed, and I was wondering if there were any guidelines or preferences for one structure over the other. Currently my choice is guided by aesthetics more than anything else ( I prefer the look and ordering of a where clause). Is there anything else I should consider? What do veteran Haskell programmers prefer?
This depends on whether you are an "expression style" or "declaration style" programmer. http://www.haskell.org/haskellwiki/Declaration_vs._expression_style http://www.haskell.org/haskellwiki/Let_vs._Where