jstaffans

ENTSO-e REST API notes

• Actual generation: 16.1.B&C, documentType=A75
• ProcessType "realised": A16
• 50Hz area: 10YDE-VE-------2

Examples

Actual generation 50Hz area, all power system resources (PSR:s), ie all types of power generation

jstaffans

#!/bin/sh
tail -n +3 "@0" | ssh <foo@bar>; exit

echo "hi"

jstaffans

4:31 PM]  
jstaffans what do I have to do to make the re-frame simple example preserve state when figwheel reloads? ie the content of the input gets reset to the default value when figwheel reloads currently. https://github.com/Day8/re-frame/tree/master/examples/simple)

[6:30 PM]  
pesterhazy @jstaffans that should work actually

[6:32 PM]  
what I'd do is to start debugging where reloading goes off the rails

[6:32 PM]  

jstaffans

((nil . ((cider-lein-parameters . "do clean, repl :headless")
         (cider-cljs-lein-repl . "(start) (repl)"))))
         
# if you put this into dir-locals.el of your project - whenever you run `cider-jack-in-clojurescript` it will run the second thing and you’d have 2 independent repl buffers - one for Clojure. another for Clojurescript

jstaffans

redplanetlabs/specter#45

New stuff:

• Precompilation feature enabling performance rivaling hand-optimized code
• Facilities for creating recursive navigators, including pre-walk and post-walk traversals (declarepath/providepath, stay-then-continue, continue-then-stay)
• ClojureScript support
• Conditional navigation (if-path, cond-path)
• Protocol paths: navigate based on the type of data encountered

jstaffans

Transducers in Clojure

Some notes for myself.

• Single-threaded concept, no inherent parallelism (as opposed to reducers)
• Key benefits: function composition, better performance by way of removing need for creation of intermediary collections
• Parallelism can be introduced by:
  • Using core.async pipelines + transducers
  • using r/fold (see comments here)
• For heavy, parallel data crunching, reducers will still probably be faster

jstaffans

(ns example-app.core)

(defn send-mails 
  [{:keys [weather-forecast]}]
  ;; ... 
)

jstaffans

{:user  {:dependencies  [[org.clojure/tools.namespace  "0.2.11"]
                         [spyscope  "0.1.5"]
                         [pjstadig/humane-test-output "0.7.0"]]
         :injections  [(require '[clojure.tools.namespace.repl :refer [refresh set-refresh-dirs]])
                       ; try/catch to workaround an issue where `lein repl` outside a project dir
                       ; will not load reader literal definitions correctly:
                       (try  (require 'spyscope.core)
                            (catch RuntimeException e))
                       (require 'pjstadig.humane-test-output)
                       (pjstadig.humane-test-output/activate!)]

jstaffans

billowy
biopsy
chinos
defaced
chintz
sponged
bijoux
abhors
fiddle
begins

jstaffans

Notes from the distributed matters 2015 conference.

Jepsen V (Kyle Kingsbury)

Talks about how Jepsen works and what systems have been tested until now, among others:

• Riak: default is last-write-wins, but you should not be using it
• ZK: works as advertised (!)

... But all of this is also on his blog, not anything really new.