Mario Vejlupek devopsmariocom

Currently considering https://github.com/webdriverio/webdrivercss

Core Goals:

Can test in up-to-date versions of all major browsers
Can test on up-to-date versions of all major OSes
Can test in IE9 (because Bootstrap v4 will support IE9+)
Don't want to have to setup/maintain our own cluster of VMs running all the necessary OSes (and all the versions of Windows)
Workflow for management of reference/baseline/norm screenshots

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

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

Reviewer's checklist - How to boost your code review skills

Purpose of my lightning talk is to present insights I've reached as a reviewer/ reviewee in the last couple of months.

I will answer these questions:

What makes a good code review good?
How to build guidelines? Dos and Don'ts.
How to educate dev/team members about the code review process?

	/*
	I've compiled a list of angular directives according to their priorities (from most priority to lesser priority).
	Also, terminal property is included for each directive that asserts it
	*/

	ng-switch 1200
	ng-repeat 1000 terminal
	ng-if 600 terminal
	ng-controller 500
	ng-init 450

	class Point2D {
	.constructor(x, y) { this.x = x, this.y = y; }
	.[Symbol.call](x, y) { return new this.constructor(x, y); }
	//...
	}

	#!sh

	dockerfile() {
	cat <<EOF
	FROM debian:8
	RUN echo 123 >/a && printf abc >/b
	RUN echo 456 >/a && echo def >>/b
	EOF
	}

	"""Ansible dict filters."""

	# Make coding more python3-ish
	from __future__ import (absolute_import, division, print_function)
	__metaclass__ = type


	from ansible.errors import AnsibleError

	#! /usr/bin/env nix-shell
	#! nix-shell -i bash -p tigervnc
	vncviewer familiardefeated.fablegymnastics.willowrelease