ifesdjeen

Because we're meeting in different places, it's hard sometimes to satisfy the rider of all the speakers. When bands are making performance, they have a list of things concert organizers should have in order for concert to be successfull and on a good level.

Don't get surprised that it's easier to hook up MacBook with MDP than your Lenovo laptop. It just is.

Neither one of mentioned points is criticizing or trying to fix an ability to speak in public. Instead, all the points are purely technical. No matter how well you can speak, slides that people can't see, inability to use your laptop, or an outage during live-coding session may ruin your talk.

After seeing common patterns, we've decided to make that one:

Checklist for speakers

ifesdjeen

#import <Cocoa/Cocoa.h>

static id monitorKeyDown;

@interface AppDelegate : NSObject <NSApplicationDelegate>

@property (assign) IBOutlet NSWindow *window;

@end

ifesdjeen

;; Declare a function
(defn fun1 [] (println 1))

;; And a hash that would capture that function
(def h {:key fun1})
;; => {:key #<user$fun1 user$fun1@5e540696>}
 
;; Now, check out the value of the key
(:key h)
;; => #<user$fun1 user$fun1@5e540696>

ifesdjeen

(require '[clojure.reflect :as r])
(use '[clojure.pprint :only [print-table]])
 
(print-table (:members (r/reflect"foo")))

ifesdjeen

(defmacro with-temp-file
  [f-sym & body]
  `(let [prefix# (.toString (UUID/randomUUID))
         postfix# (.toString (UUID/randomUUID))
         ~f-sym (java.io.File/createTempFile prefix# postfix#)]
     (try
       (do ~@body)
       (finally
         (.delete ~f-sym)))))

ifesdjeen

(defmulti even-odd 
  (fn [i] 
    (if (= 0 (mod i 2))
      :even
      :odd)))

(defmethod even-odd :even
  [i]
  (println "Even " i))

ifesdjeen

(defn- apply-to-values [m f]
  "Applies function f to all values in map m"
  (into {} (for [[k v] m]
            [k (f v)])))

ifesdjeen

(defn handler
  []
  (println "HANDLER"))


(defn wrap-1
  [handler]
  (fn [request]
    (println 1)
    (handler request)

ifesdjeen

setwd("~/analytics/")
kp = read.csv("grouped_keys_combined")
colnames(kp) = c("Day", "Minute", "Strokes")
attach(kp)

parseTimestamp <- function(ts) as.POSIXct((ts + 120*60*1000) / 1000, origin="1970-01-01", tz="CEST")
kp$DayParsed <- parseTimestamp(kp$Day)
head(kp$DayParsed)

library("ggplot2")

ifesdjeen

(defn vec-contains?
  [vec value]
  (not (nil? (some #(= value %) vec))))


(vec-contains? ["a" "b" "c"] "a") ;; true
(vec-contains? ["a" "b" "c"] "e") ;; false