pjstadig

(ns typehint.core)

;; A little type hint hint...

(set! *warn-on-reflection* true)

;; There are two ways to type hint the return value of a function, but one is
;; (technically) wrong:

(defn ^String as-string0

ohpauleez

;; Let's start with a simple conditional interceptor that works with functions...

(defn conditional-context                                                                                       
  "Given a keyword name and any variable predicate and terminator function pairs,                               
  return an interceptor that will apply the terminator function paired to the first                             
  truthy predicate.  Predicates and terminators are both given the context as                                   
  the only argument.                                                                                            
  If all predicates fail, the original context is returned."                                                    
  [name-kw & pred-terms]                                                                                        

edwthomas

(:require [re-frame.core :as re-frame]
          [reagent.core :as reagent]
          [cljsjs.chartjs])
          
(defn show-revenue-chart
  []
  (let [context (.getContext (.getElementById js/document "rev-chartjs") "2d")
        chart-data {:type "bar"
                    :data {:labels ["2012" "2013" "2014" "2015" "2016"]
                           :datasets [{:data [5 10 15 20 25]

ThomasMeier

Clojure is for Aristotelians

I was reading ["Clojure is for Type B Personalities"][2] and it sparked some thoughts I had about the intersection of western philosophy and programming.

One could say Mathematics is an extension of Epistemology. And all theory about computability are an extension of mathematics. I reckon how one thinks about computability and how one writes computable functions are a reflection of a person's natural epistemological tendencies. This is going to be just as unscientific as ["Clojure is for Type B Personalities"][2], but hopefully another

dmvaldman

Descartes, Berkeley and Functional Reactive Programming

By @dmvaldman

Functional Reactive Programming (FRP) is generating buzz as an alternative to Object Oriented Programming (OOP) for certain use cases. However, an internet search quickly leads a curious and optimistic reader into the rabbit-hole of monads, functors, and other technical jargon. I’ve since emerged from this dark and lonely place with the realization that these words are mere implementation details, and that the core concepts are far more universal. In fact, the groundwork was laid down many centuries before the first computer, and has more to do with interpretations of reality, than structuring programs. Allow me to explain.

There’s an old thought experiment that goes like this:

john2x

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences