page 27(pdf version): " Local Bindings: let
let allows you to define named references that are lexically scoped to the extent of the let expression. Said another way, let defines locals. ...... ... Note that let is implicitly used anywhere locals are required. In particular, fn (and therefore all other function-creation and function-definition forms like defn) uses let to bind function parameters as locals within the scope of the function being defined. For example, x and y in the hypot function above are let-bound by defn. *So, the vector that defines the set of bindings for a let scope obeys the same semantics whether it is used to define function parameters or an auxiliary local binding scope.* *"* i am confused about the text in red. apparently ,the vector used for let locale binding is not the same as the vector used for function parameters , for example (defn hypot [x y] (let [x2 (* x x) y2 (* y y)] (Math/sqrt (+ x2 y2))) ) the second line [x y] vector says the function has two parameter, it doesn't mean let x=y, while , the third line ,it means let x2=(* x x), it is set value operation. is it a book error ? -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
