Skip to content

Instantly share code, notes, and snippets.

View walterdavis's full-sized avatar

Walter Lee Davis walterdavis

29 followers · 24 following
View GitHub Profile
@pcreux
pcreux / README.md
Last active October 10, 2020 18:44
Failsafe: degrade user experience and notify when something goes wrong.

Failsafe

When something goes wrong I want to degrade the user experience (instead of returning a 500 - Server Error) And I want to be notified about the failure

Usage

Wrap non mission critical code:

@marcoarment
marcoarment / apns_jwt_token.php
Last active April 14, 2024 06:49
Generate ES256 JWT tokens for Apple Push Notification Service (APNS) in PHP
<?php
function base64url_encode($binary_data) { return strtr(rtrim(base64_encode($binary_data), '='), '+/', '-_'); }
function apns_jwt_token($team_id, $key_id, $private_key_pem_str)
{
if (! function_exists('openssl_get_md_methods') || ! in_array('sha256', openssl_get_md_methods())) throw new Exception('Requires openssl with sha256 support');
$private_key = openssl_pkey_get_private($private_key_pem_str);
if (! $private_key) throw new Exception('Cannot decode private key');
@tomhicks
tomhicks / plink-plonk.js
Last active March 18, 2024 02:23
Listen to your web pages
@ntamvl
ntamvl / create-ruby-gem-that-adds-rake-tasks.md
Last active February 16, 2024 19:13
How to create a Ruby gem that adds Rake tasks

How to create a Ruby gem that adds Rake tasks

Create a gem

One way to do this is to use bundler to scaffold our gem:

bundler gem my_gem

Add rake tasks to our gem

I prefer to put tasks meant to manage the gem itself in lib/tasks, and tasks the gem is meant to provide to gem users in lib/my_gem/tasks.

@fractaledmind
fractaledmind / bug_finding_binary_data.rb
Created December 13, 2018 18:42
A test script to demonstrate a bug in ActiveRecord with finding binary data using ARel
# frozen_string_literal: true
require "bundler/inline"
gemfile(true) do
source "https://rubygems.org"
git_source(:github) { |repo| "https://github.com/#{repo}.git" }
# Activate the gem you are reporting the issue against.
@javan
javan / trix_color_attributes.coffee
Created March 23, 2018 20:02
getHexColor = (color) ->
return "" unless color
return color if /^#/.test(color)
rgbValues = getRGBValues(color)
hexValues = rgbValues.map(numberToHex)
"#" + hexValues.join("")
numberToHex = (number) ->
"0#{number.toString(16)}".slice(-2).toUpperCase()
@BrianSigafoos
BrianSigafoos / metaprogramming.md
Last active March 8, 2023 14:43
Metaprogramming in Ruby

Dynamic Method

# Decide how to define a method at runtime
class C
end

C.class_eval do
  define_method :my_method do
    'a dynamic method'
 end
@ljharb
ljharb / array_iteration_thoughts.md
Last active April 29, 2024 17:13
Array iteration methods summarized

Array Iteration

https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu

@searls
searls / market_research.rb
Last active September 18, 2018 03:21
Was chatting with @mfeathers about retaining Ruby's chained Enumerable style, but finding a way to inject names that reflects the application domain (as opposed to just littering functional operations everywhere, which may be seen as a sort of Primitive Obsession)
# A little toy file demonstrating how to build chainable
# data transformations that reveal some amount of intent
# through named extracted methods.
#
# Kudos to @mfeathers for giving me the idea to try this
#
# Copyright Test Double, LLC, 2016. All Rights Reserved.
require_relative "marketing_refinements"
@nateberkopec
nateberkopec / 0.result.md
Last active January 18, 2024 11:20 — forked from tomfuertes/0.result.md
De-'Async Inject'ing Universal Analytics

De-'Async Inject' Universal Analytics

This gist applies the theory from Ilya Grigorik's Script-injected "async scripts" considered harmful on the default Universal Analytics snippet. TLDR place this above the CSS in the <head> of your document

<!-- Google Analytics Part 1: Creates window.ga, sets account, and queues pageview-->
<script>
  !function(n,t){n.GoogleAnalyticsObject=t,n[t]=n[t]||function(){(n[t].q=n[t].q||[]).push(arguments)},n[t].l=1*new Date}(window,"ga");
  ga('create', 'UA-XXXX-Y', 'auto'); // REPLACE UA-XXXX-Y w/ YOUR ACCOUNT
 ga('send', 'pageview');