whoahbot

Clojure West

Domain driven design with Clojure

• Organizing larger applications
• Domain logic shouldn’t include handlers for bad/unclean data.
  • validateur, bouncer, clj-schema for checking data going into the pipeline.
  • domain-specific, semantic checks
  • TODO: Any better ways for doing this conditional validation.
  • Need to factor out common data cleaning utils into shared library.

whoahbot

(ns async-playground.core
  (:require [clojure.core.async :as async
             :refer [go chan >! <! >!! <!! timeout close!
                     thread alts! alts!! sliding-buffer]]))

(defn walk [t]
  (cond (nil? t)
        nil
        :else
        (let [[l v r] t]

whoahbot

skyliner=# select count(transaction_id) from transaction_kv where when_created > '2013-10-22T00:00:00.000-00:00';
ERROR:  could not read block 373028 in file "base/67212/90213.2": read only 0 of 8192 bytes

whoahbot

(defun toggle-fullscreen ()
  "Toggle full screen"
  (interactive)
  (set-frame-parameter
     nil 'fullscreen
     (when (not (frame-parameter nil 'fullscreen)) 'fullboth)))

whoahbot

This is a sample from a tar file class I created for a chef cookbook. In this example I'm iterating over entries in the tar file. Because of the way tar handles filenames over 100 chars (././@LongLink) I have to do something to register that i'm dealing a longlink and treat the next entry differently.

I would love any advice on how to clean this up. Its a super long method, I especially don't like that I have to set full_name to nil and twice.

Code here

Tar Longlink

whoahbot

Clojure Parallelism, beyond futures

intro

• Leon Barrett
  • Wrote claypoole

example

• Continuous rank probability score
• model output produces a distribution of samples
• want to compare observed to our model
• fn crps
  • We map this crps fn for each timestep