ssrihari

An opinionated list of excellent Clojure learning materials

These resources (articles, books, and videos) are useful when you're starting to learn the language, or when you're learning a specific part of the language. This an opinionated list, no doubt. I've compiled this list from writing and teaching Clojure over the last 10 years.

• 🔴 Mandatory (for both beginners and intermediates)
• 🟩 For beginners
• 🟨 For intermediates

Table of contents

1. Getting into the language

cldwalker

Spike

I looked into the state of GraalVM and Clojure and wrote some small work-related scripts.

GraalVM Build Tools

• Downloaded GraalVM and set $GRAALVM_HOME
• Found two main libraries for building GraalVM CLIs - https://github.com/luchiniatwork/cambada#packaging-as-a-native-image and https://github.com/taylorwood/clj.native-image (or https://github.com/taylorwood/lein-native-image for the lein equivalent). I chose clj.native-image as it seemed more focused on doing one thing well.
• First tried its template example which was easy to follow.
• Then added a graalvm build to one of our small cli tools
• Found it to be pretty straightforward except for a stdout flushing issue that was trivial to fix

alfonsogarciacaro

Deploying an F# ASP.NET Core app to Azure

Last week I spent a lot of time trying to deploy an F# ASP.NET Core app (a Giraffe app, specifically) to Azure because the information to complete all the steps was scattered in several places. So I'm writing this hopefully it will save the pain to others :)

Preparation

The following steps are mostly taken from this guide and it's only necessary to do them once:

1. Create an account in Azure (or use an existing one)
2. Create a resource group (or use an existing one)

stuarthalloway

;; try this form-by-form at a REPL
(require '[clojure.spec.alpha :as s])

;; create an inline DSL to describe the FizzBuzz world
(defmacro divides-by
  [nm n]
  `(s/def ~nm (s/and pos-int? #(zero? (mod % ~n)))))

;; specify FizzBuzz 
(divides-by ::fizz 3)

mosheeshel

import java.io.IOException;
import java.util.Vector;

/**
 * Created by moshee
 * on: 07/06/17
 * to compile in place: `javac ConsumeHeap.java`
 * Execute: `java -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/log/app-`date +%s`-pid$$.hprof -XX:OnOutOfMemoryError=/opt/app/bin/upload_dump_s3.sh -Xmx2m ConsumeHeap`
 * HeapDumpOnOutOfMemoryError specifies to automatically create a dump when OOM occures
 * HeapDumpPath supplies a path to put that file

fgui

;; it formats buffer and attempts to return to original position.
(defun cider-format-buffer-back () (interactive)
  (let (p)
    (setq p (point))
    (cider-format-buffer)
    (goto-char p))
  )

(defun add-clj-format-before-save () (interactive)
       (add-hook 'before-save-hook

felipebueno

Using Emacs CIDER as the Figwheel REPL tool

project.clj should have this line:

  :figwheel { :nrepl-port 7888 }

At the defproject-level.

It enables external tools to connect to the Figwheel REPL. To connect

khanghoang

##Get started ###On local

• Install shipit & shipit-deploy
• Add shipitfile.js
• Run ssh-add /path/to/pem/file

###Errors ####node: not found Apparently Debian has renamed the command node to nodejs which is causing the problem. For me installing nodejs-legacy fixed the issue.
To fix:

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

auramo

## Using Emacs CIDER as the Figwheel REPL tool

project.clj should have this line:

```
  :figwheel { :nrepl-port 7888 }
```
At the defproject-level.

It enables external tools to connect to the Figwheel REPL. To connect