alexanderadam

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Advanced SCSS

Or, 16 cool things you may not have known your stylesheets could do. I'd rather have kept it to a nice round number like 10, but they just kept coming. Sorry.

I've been using SCSS/SASS for most of my styling work since 2009, and I'm a huge fan of Compass (by the great @chriseppstein). It really helped many of us through the darkest cross-browser crap. Even though browsers are increasingly playing nice with CSS, another problem has become very topical: managing the complexity in stylesheets as our in-browser apps get larger and larger. SCSS is an indispensable tool for dealing with this.

This isn't an introduction to the language by a long shot; many things probably won't make sense unless you have some SCSS under your belt already. That said, if you're not yet comfy with the basics, check out the aweso

alexanderadam

alexanderadam

WORK IN PROGRESS

Docker on Android

Setup:

Samsung Galaxy Tab S5e SM-T720
Android Pie on Linux 4.9.112 (not rooted)
Termux

alexanderadam

#!/bin/sh

# qemu-img create -f qcow2 mac_hdd.img 64G
# echo 1 > /sys/module/kvm/parameters/ignore_msrs
#
# Type the following after boot,
# -v "KernelBooter_kexts"="Yes" "CsrActiveConfig"="103"
#
# printf 'DE:AD:BE:EF:%02X:%02X\n' $((RANDOM%256)) $((RANDOM%256))
#

alexanderadam

FROM golang:1.14-alpine
COPY . /go/src/app
WORKDIR /go/src/app
RUN go get -v -d
RUN go install
CMD ["app"]

alexanderadam

def alert(color=:default, message)
  colors = {default: 0, black: 30, red: 31, green: 32, orange: 33, blue: 34, magenta: 35, teal: 36, white: 37}
  $stdout.puts "----\e[#{colors[color]}m#{message}\e[0m----"
end

alert :red, 'before all tests'
at_exit { alert :red, 'after all tests' }

require 'minitest/autorun'

alexanderadam

* Shows a message while asserting like: 

ok: [host] => {                  
    "msg": "disk usage 4.2B of total 20.0GB (21.0%) (should exceed limit 90.0%)"
}

* Note this only looks at first mount point on current node
* Fails if disk is near-full
* Last step pushes to a push-based monitoring service, which will alert us if it doesn't get there after some time
* Need to setup a  variable `disk_limit`, which is the max acceptable usage ratio, e.g. set it to 0.8 if you want to keep disks within 80% of max size

alexanderadam

namespace :optimization do
  desc "Provide DB vacuum for production environment"
  task :vacuum => :environment do
    begin
      tables = ActiveRecord::Base.connection.tables
      tables.each do |table|
        ActiveRecord::Base.connection.execute("VACUUM FULL ANALYZE #{table};")
      end
    rescue Exception => exc
      Rails.logger.error("Database VACUUM error: #{exc.message}")

alexanderadam

EasterHegg 18 Workshop: Smart Contracts on Ethereum

Requirements:

• Chrome/ium or Firefox
• Metamask

Coding your first smart contract!

a. Setting up Metamask

alexanderadam

#!/bin/sh
# put this file in /etc/network/if-up.d/
if iwconfig wlp4s0 | grep -c "ESSID:\"WIFIonICE\""
then
    curl -s "https://www.ombord.info/hotspot/hotspot.cgi?connect=&method=login&realm=db_advanced_wifi"
fi