jcayzac

# Start a 1fps screen capture to `~/Movies/timelapse - <end-datetime>.webm`.
# Requires ffmpeg+libvpx installed: `brew install ffmpeg`.
# Press `q` to stop.
capture_timelapse() {
  local output="$HOME/Movies/timelapse - $(date '+%y-%m-%d %H%M%S').webm"
  local device=$(set +e +o pipefail; ffmpeg -f avfoundation -list_devices true -i '' 2>&1 | sed -En 's#^.*\[([a0-9]+)\] Capture screen 0#\1#p'; true)
  if [ -n "$device" ]
  then
    printf 'Capturing timelapse to "%s"…\nPress Q to stop.\n' "$output"
    ffmpeg \

jcayzac

# $1: items power of 10 (e.g. 3=kilo, 6=mega)
# $2: entropy bits (80=2^80 values)
# Requires `brew install bc` (GNU bc)
birthday_probability() {
  function bc() {
    declare fmt="$1"
    shift
    printf 'scale=256\n'"$fmt"'\n' ${1+"$@"} | BC_LINE_LENGTH=0 /usr/local/opt/bc/bin/bc -l
  }
  declare exact="$(bc '1-e(-((10^%s)^2)/((2^%s)*2))' "$1" "$2")"

jcayzac

Sans

• League Spartan: Preview, Project.
• Montserrat: Preview, Project.
• Public Sans: , .
• Recursive: Preview, Project.

Monospace

• Inconsolata: Preview, Project.

jcayzac

# $1: /path/to/woff.2
  trim-font() {
    local OUTPUT_DIR="${1%/*}/trimmed"
    mkdir -p "$OUTPUT_DIR"
    pyftsubset "$1" \
      --unicodes=U+0000-036F \
      --ignore-missing-glyphs \
      --layout-features='*' \
      --output-file="${OUTPUT_DIR}/${1##*/}" --flavor=woff2
  }

jcayzac

const { spawn } = require('child_process')
const { Transform } = require('stream')
const { createHash } = require('crypto')
const split2 = require('split2')
const report = require('vfile-reporter')
const { nextTick } = require('process')

const DELIMITER = '___PLANTUML_DIAGRAM_DELIMITER___'
const SPLITTER = split2(DELIMITER)
const OPTIONS = [

jcayzac

FROM oracle/graalvm-ce:20.0.0-java8
RUN gu install native-image
WORKDIR /opt/graalvm
ADD https://sourceforge.net/projects/plantuml/files/1.2020.8/plantuml.1.2020.8.jar/download /opt/graalvm/plantuml.jar
RUN native-image \
  --verbose \
  -J-Xmx16G -J-Xms16G -Djava.awt.headless=true \
  --no-server \
  --no-fallback \

jcayzac

Server API Testing

Articles

• An Overview of JavaScript Testing in 2019

JS Frameworks

• Jest is a delightful JavaScript Testing Framework with a focus on simplicity.
• Puppeteer Headless Chrome bindings
• Jest/Puppeteer Use Jest together with Puppeteer
• Chakram REST API test framework. BDD and exploits promises
• OpenAPI Test Templates Generate basic unit test scaffolding for your OpenAPI specification

jcayzac

# Example
ffm -i video.mov -map_metadata 0 -map 0 -c:v copy -c:a copy -c:s copy -c:d copy -c:t copy -f mp4 video.mp4

# Convert one file
# $1: video.mov
convert-mov-to-mp4() {
	(
		set -e -u -o pipefail
		! [[ "$1" =~ ^(.+)\.[mM][oO][vV]$ ]] || {
			local D="${BASH_REMATCH[1]}.mp4" T="${BASH_REMATCH[1]}.tmp.mp4"

jcayzac

load("@bazel_tools//tools/build_defs/repo:java.bzl", "java_import_external")

java_import_external(
    name = "com_google_auto_common",
    jar_sha256 = "eee75e0d1b1b8f31584dcbe25e7c30752545001b46673d007d468d75cf6b2c52",
    jar_urls = [
        "http://domain-registry-maven.storage.googleapis.com/repo1.maven.org/maven2/com/google/auto/auto-common/0.7/auto-common-0.7.jar",
        "http://repo1.maven.org/maven2/com/google/auto/auto-common/0.7/auto-common-0.7.jar",
    ],
    licenses = ["notice"],  # Apache 2.0

jcayzac

WebP (lossless)

$ cwebp -lossless -z 9 -mt -m 6 -sharp_yuv "$INPUT" -o "$OUTPUT"

WebP (lossy)

$ cwebp -preset photo -q 80 -mt -m 6 -sharp_yuv -metadata none "$INPUT" -o "$OUTPUT"