dustingetz

TodoMVC, with a twist! — Electric Clojure

1. it's multiplayer! 0 LOC cost
2. state is durable! (server side database) 0 LOC cost
3. See those pending spinners? We've added a server delay to demonstrate managed load states.

20220817.todomvc.mp4

Electric is a "multi tier" Clojure/Script dialect for full-stack web application development. It uses macros to let you interweave client and server code in a single .CLJC file, so you can define a full-stack frontend/backend webapp all in one place. Electric is designed for rich dynamic applications with reactive user interfaces and complex frontend/backend data sync requirements.

kwonowk

javascript:(function(){
   function parseNumber(_txt){
      let txt = _txt.split(" ")[0];
      let num_clean = parseFloat(txt.replace(",",""));
      return num_clean;
   }
   function asset_name(_txt){
      let name = _txt.split(" ")[1]; 
      return name;
   }

StevenACoffman

Unicode Character Look-Alikes

Original Letter	Look-Alike(s)
a	а ạ ą ä à á ą
c	с ƈ ċ
d	ԁ ɗ
e	е ẹ ė é è
g	ġ
h	һ

yelouafi

// We model the call stack using a linked list of Generators
// Each Generator has a _return field pointing back to its parent

function stepGen(gen, arg) {
    const {done, value} = gen.next(arg)
    if(done) {        
        if(gen._return) {
            stepGen(gen._return, value)
        }

beders

(defn create-function-call [param expr]
  "Create an sexp for calling expr with a first argument provided by a promise.
  If expr is a list (already in form suitable for a function call), insert the first argument at second position,
  otherwise turn expr into a function call expression, unless the function is an fn, which is simply returned.

  println -> (fn [param] (println param))

  (* 2)   -> (fn [param] (* param 2))
  

yelouafi

In this tutorial we're going to build a set of parser combinators.

What is a parser combinator?

We'll answer the above question in 2 steps.

1. What is a parser?
2. and, what is a parser combinator?

So first question: What is parser?

oakes

How Clojure's documentation can leapfrog other languages

Summary

I made a documentation generator that cashes in on Clojure's dynamism. See the play-cljs docs (a ClojureScript game library) for an example of its output.

The Problem

Like many of you, I've often wondered what my final regret will be on my deathbed. My best guess came to me in a dream recently. I was walking across the charred earth of an apocalyptic future world, maneuvering around the remains of the less fortunate. I was startled to find a young girl, barely holding onto her life. She murmured something to me. I asked her to repeat it, and she said more loudly: "I...wish your Clojure projects didn't have such crappy documentation."

ibraheem4

Installing Postgres via Brew

Pre-Reqs

Brew Package Manager

In your command-line run the following commands:

1. brew doctor
2. brew update

djspiewak

Thread Pools

Thread pools on the JVM should usually be divided into the following three categories:

1. CPU-bound
2. Blocking IO
3. Non-blocking IO polling

Each of these categories has a different optimal configuration and usage pattern.

danielrw7

#!/bin/sh

command="${*}"
printf "Initialized REPL for `%s`\n" "$command"
printf "%s> " "$command"
read -r input
while [ "$input" != "" ];
do
    eval "$command $input"
    printf "%s> " "$command"