dhh

ruby '2.7.1'

gem 'rails', github: 'rails/rails'
gem 'tzinfo-data', '>= 1.2016.7'  # Don't rely on OSX/Linux timezone data

# Action Text
gem 'actiontext', github: 'basecamp/actiontext', ref: 'okra'
gem 'okra', github: 'basecamp/okra'

# Drivers

Checksum

# JSON diff and patch for jq (https://stedolan.github.io/jq/)
# Author: Srinath Sankar
#
# Usage:
# diff: jq -sS 'include "diff-patch"; diff' a.json b.json > patch.json
# patch: jq -sS 'include "diff-patch"; patch' a.json patch.json
#
# Caveats: tested only with top level objects using jq 1.6

def flatten_obj:

halgari

So you’d like to contribute to Clojure, great! Let’s talk about what that involves.

The first thing you’ll want to make sure is that your idea is valid, and that you won’t spend a ton of time working on something that won’t make into master. To do this, you should create a JIRA ticket. For example, let’s say we want to improve how core.async handles channel closing propagation. It’s not a super complex problem, but there are some design questions about which of the various semantics currently in place should be the default, and if some semantics should be configurable.

So start by making a JIRA ticket and stating what the problem is you’re trying to solve, what the possible options for solving the problem. Now hit save and wait for the ticket to be triaged. Alex Miller will take a look when he can, and that can take a few days to a few weeks, depending on the time of the year (he has other responsibilities). Alex may out-right reject the idea if he knows Rich would never approve the ticket, but otherwise h

jasim

“Why Functional Programming Matters” by John Hughes.

https://www.cs.kent.ac.uk/people/staff/dat/miranda/whyfp90.pdf.

https://blog.acolyer.org/2016/09/14/why-functional-programming-matters/

“The Design of a Pretty-printing Library” by John Hughes.

CodyReichert

Configuring Emacs for react, es6, and flow

For a while, JSX and new es6 syntax had flaky support in emacs, but there's been huge work on a lot of packages. Using emacs for JavaScript with React, ES6, and Flow (or Typescript, etc) is really easy and powerful in Emacs these days.

This is how you can work on modern web development projects with full support for tooling like JSX, Flow types, live eslint errors, automatic prettier.js formatting, and more.

Set up web-mode

web-mode provides most of the underlying functionality, so a huge shout-out to the maintainer(s) there.

mfikes

If you are curious about the types inferred by ClojureScript, it is easy to get some insight using a macro:

(defmacro inferred-type [form]
  `'~(cljs.analyzer/infer-tag &env
       (cljs.analyzer/no-warn (cljs.analyzer/analyze &env form))))

This is the kind of dev-time macro you could refer using the new user.cljs feature.

mfikes

You need to first install GraalVM, and then set your PATH so that you get the GraalVM binaries (incluing the GraalVM version of node).

You can then install R and Ruby via

gu -c install org.graalvm.r
gu -c install org.graalvm.ruby

hjertnes

SPC
    SPC: find file
    , switch buffer
    . browse files
    : MX
    ; EX
    < switch buffer
    ` eval
    u universal arg
    x pop up scratch

mfikes

Start cljs.main with rebel-readline:

clojure -Sdeps '{:deps {github-mfikes/cljs-main-rebel-readline {:git/url "https://gist.github.com/mfikes/9f13a8e3766d51dcacd352ad9e7b3d1f" :sha "27b82ef4b86a70afdc1a2eea3f53ed1562575519"}}}' -i @setup.clj -m cljs.main

mfikes

The following code should evaluate to true:

((or int? string?) 1)

But instead it evaluates to the int? function. In other words this evaluates to true:

(= int? ((or int? string?) 1))