Clojurians Log v2

Morning

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morning

Ok if I ask some bidi questions here? Previously tried in #C03S1KBA2 but I feel like the ratio of bidi users is higher here :simple_smile:

Basically have a routing scheme like this

;; /DE/de/batterie
;; /DE/en/battery
;; /DE/de/batterie/gespeichert
;; /DE/en/battery/saved

martinklepsch: dyu mean pulling out the second segment as a parameter ?

@mccraigmccraig: I’m doing that, the problem is more: when using path-for how do I make the third segment depend on the second

currently I have something like this:

(defn path-for [route opts]
  "Small wrapper around Bidi's path-for to set
   i18n route parameters depeding on language"
  (->> (get i18n-routes (:lang opts))
       (assoc opts :i18n-route)
       (mapcat identity)
       (apply bidi/path-for routes route)))

ah, gotcha... that's more advanced bidi usage than mine :simple_smile:

which is reasonably ok but I think it wont work well anymore as soon as I add additional segments (like the “saved”) thing above..

lol - guess which clj* platform this is running on : (map inc "foo") ;=> ("f1" "o1" "o1")

mccraigmccraig: clj-clr ?

@gjnoonan: cljs - only in js does "f" + 1 => "f1"

scala> "f" + 1
res1: String = f1

@mccraigmccraig: the joys of JS!

@minimal: Scala should know better….or is that ‘is no better’?

ha, that doesn't look entirely unreasonably now @minimal

i guess what surprised me was the combination of map working with single-character strings rather than chars and the arithmetic op

but if you are going to convert the args to + automatically then converting to a string makes more sense

@agile_geek: scala has implicits so you can recreate some js gotchas

@mccraigmccraig: chars in cljs are just strings right?

@minimal: oh how I love the ‘magic’ of implicits!

yeah, js doesn't have chars @minimal

and (+ "f" 1) ;-> "f1" seems reasonable... (inc "f") ;-> "f1" less so

another cljs difference I found today

(count (range))
1.7976931348623157e+308

haha wtf ?

range uses maxint for the default instead of iterating forever

lol - evaluating (range) in my cljs repl made chrome a bit unhappy

how does it short-circuit tho ?

cljs.user=> (source range)
(defn range
  "Returns a lazy seq of nums from start (inclusive) to end
   (exclusive), by step, where start defaults to 0, step to 1,
   and end to infinity."
  ([] (range 0 (.-MAX-VALUE js/Number) 1))
  ([end] (range 0 end 1))
  ([start end] (range start end 1))
  ([start end step] (Range. nil start end step nil)))

clojure no args version is ([] (iterate inc' 0))