I started a project on a Hobby Dev plan (free, limit 10,000 rows), and then later needed to upgrade it to Hobby Basic ($9/month, limit 10,000,000 rows).
After assigning the new database, I had two databases attached to the application. They looked something like this:
Using JavaScript libraries from ClojureScript involves two distinct concerns:
Right now, the only single tool that solves these probems reliably, optimally, and with minimal configuration is shadow-cljs, and so that is what I favor. In paricular, shadow-cljs lets you install npm modules using npm or yarn and uses the resulting package.json to bundle external dependencies. Below I describe why, what alternatives there are, and what solutions I disfavor at this time.
| # Generate the private and public keys | |
| openssl ecparam -name secp256k1 -genkey -noout | openssl ec -text -noout > key | |
| # Extract the public key and remove the EC prefix 0x04 | |
| cat key | grep pub -A 5 | tail -n +2 | tr -d '\n[:space:]:' | sed 's/^04//' > pub | |
| # Extract the private key and remove the leading zero byte | |
| cat key | grep priv -A 3 | tail -n +2 | tr -d '\n[:space:]:' | sed 's/^00//' > priv | |
| # Generate the hash and take the address part |
| package main | |
| import ( | |
| "fmt" | |
| "reflect" | |
| ) | |
| // Name of the struct tag used in examples | |
| const tagName = "validate" |
This gist shows how to create a GIF screencast using only free OS X tools: QuickTime and ffmpeg.
Forked from https://gist.github.com/dergachev/4627207. Updated to use a palette to improve quality and skip gifsicle.
To capture the video (filesize: 19MB), using the free "QuickTime Player" application:
This describes how I setup Atom for an ideal Clojure development workflow. This fixes indentation on newlines, handles parentheses, etc. The keybinding settings for enter (in keymap.cson) are important to get proper newlines with indentation at the right level. There are other helpers in init.coffee and keymap.cson that are useful for cutting, copying, pasting, deleting, and indenting Lisp expressions.
The Atom documentation is excellent. It's highly worth reading the flight manual.
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.
Press minus + shift + s and return to chop/fold long lines!