Seth Lopez sethlopezme

This document collects various quirks and useful pieces of information that I came across in adding support for the new modmail API to PRAW.

Secret Codes

Certain pieces of data are represented by numerical codes, which had to be deciphered through trial and error. These lists could easily be incomplete.

Mod actions

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

Don't use VPN services.

No, seriously, don't. You're probably reading this because you've asked what VPN service to use, and this is the answer.

Note: The content in this post does not apply to using VPN for their intended purpose; that is, as a virtual private (internal) network. It only applies to using it as a glorified proxy, which is what every third-party "VPN provider" does.

A Russian translation of this article can be found here, contributed by Timur Demin.
A Turkish translation can be found here, contributed by agyild.
There's also this article about VPN services, which is honestly better written (and has more cat pictures!) than my article.

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

Get Git log in JSON format

git log --pretty=format:'{%n  "commit": "%H",%n  "abbreviated_commit": "%h",%n  "tree": "%T",%n  "abbreviated_tree": "%t",%n  "parent": "%P",%n  "abbreviated_parent": "%p",%n  "refs": "%D",%n  "encoding": "%e",%n  "subject": "%s",%n  "sanitized_subject_line": "%f",%n  "body": "%b",%n  "commit_notes": "%N",%n  "verification_flag": "%G?",%n  "signer": "%GS",%n  "signer_key": "%GK",%n  "author": {%n    "name": "%aN",%n    "email": "%aE",%n    "date": "%aD"%n  },%n  "commiter": {%n    "name": "%cN",%n    "email": "%cE",%n    "date": "%cD"%n  }%n},'

The only information that aren't fetched are:

%B: raw body (unwrapped subject and body)
%GG: raw verification message from GPG for a signed commit

raf.js

A simple script with a few niceties that allows for multiple requestAnimationFrame calls, and FPS pinning.

How it works

The script polyfills rAF if required, then overloads requestAnimationFrame and cancelAnimationFrame with a process that allows multiple frames to be queued up for rAF to run.

This is useful if there are multiple animations running on the page, you want all the callbacks to happen at once, and not on multiple rAF calls. This script is meant as a drop-in solution to that problem.

	// clap::Values is an iterator of &str
	fn arg_to_platforms(platforms_option: Option<clap::Values>) -> Result<Vec<PlatformKind>, String> {
	if let Some(platform_values) = platforms_option {
	let mut platforms: Vec<PlatformKind> = vec![];

	for platform in platform_values {
	platforms.push(platform.parse::<PlatformKind>()?);
	}

	platforms.sort();

	android.permission.ACCESS_ALL_DOWNLOADS
	android.permission.ACCESS_BLUETOOTH_SHARE
	android.permission.ACCESS_CACHE_FILESYSTEM
	android.permission.ACCESS_CHECKIN_PROPERTIES
	android.permission.ACCESS_CONTENT_PROVIDERS_EXTERNALLY
	android.permission.ACCESS_DOWNLOAD_MANAGER
	android.permission.ACCESS_DOWNLOAD_MANAGER_ADVANCED
	android.permission.ACCESS_DRM_CERTIFICATES
	android.permission.ACCESS_EPHEMERAL_APPS
	android.permission.ACCESS_FM_RADIO

	#!/bin/bash
	set -e

	JAVA_HOME=${1-text}
	[ $# -eq 0 ] && { echo "Usage: sudo $0 \$(/usr/libexec/java_home -v '1.8*')" ; exit 1; }

	KEYSTORE=$JAVA_HOME/jre/lib/security/cacerts

	wget https://letsencrypt.org/certs/letsencryptauthorityx1.der
	wget https://letsencrypt.org/certs/letsencryptauthorityx2.der

	#!/bin/bash

	JAVA_HOME=${1-text}
	[ $# -eq 0 ] && { echo "Usage: sudo $0 \$(/usr/libexec/java_home -v '1.8*')" ; exit 1; }

	KEYSTORE=$JAVA_HOME/jre/lib/security/cacerts

	wget https://letsencrypt.org/certs/isrgrootx1.pem
	wget https://letsencrypt.org/certs/lets-encrypt-x3-cross-signed.der
	wget https://letsencrypt.org/certs/lets-encrypt-x4-cross-signed.der