henrik

class BigDecimal
   # `BigDecimal(123.456, 2)` becomes 120.0. It keeps 2 *significant digits*.
   # If you want two *decimals* of precision, use this method.
   def self.with_decimal_precision(value, precision)
     if value.is_a?(Float)
       length_before_decimal = Math.log10(value.abs).to_i + 1  # log for performance.
       BigDecimal(value, length_before_decimal + precision)
     else
       BigDecimal(value, precision)
     end

henrik

require "open-uri"

r = -> { URI(_1).read }

post_dates = r.("https://daringfireball.net/archive/")
  .scan(%r{<small>(.+?)</small>})
  .map { |(x)| Date.parse(x.gsub("&nbsp;", " ")) }

link_dates = r.("https://daringfireball.net/linked/")
  .scan(%r{href="(.+?/linked/20\d\d/.+?)"})

henrik

module AttrExtras
  def pattr_initialize(&block)
    arg_names = block.parameters.map(&:last)

    arg_names.each do
      attr_reader _1
      private _1
    end

    define_method(:__attr_extras_init_block, &block)

henrik

-- Works around a bug where Photos screensavers show original rather than edited versions:
-- https://discussions.apple.com/thread/7881820
--
-- This script exports edited versions to a folder, which the screensaver can then be configured to use.
-- Run it on a schedule e.g. via crontab.
-- By Henrik Nyh <https://henrik.nyh.se> under the MIT licence.

set albumName to "Skärmsläckare"  -- Export from this album.
set exportFolder to POSIX file (do shell script "echo ~/Library/original_photos_for_screensaver")  -- To this folder.

henrik

We had a downloaded MongoDB dump that we wanted to restore on cloud.MongoDB.com. This is how we did it:

0. Download the backup via the MongoDB web UI.

1. Unzip it. In this example we assume it unzipped to /tmp/foo.

2. Have MongoDB installed locally, e.g. via:

    brew tap mongodb/brew
    brew install mongodb-community
   

3. Start a local Mongo server:

henrik

set currentTimestamp to do shell script "date +%s"
set exportFile to (path to desktop as text) & "honda_e_wallpaper_" & currentTimestamp & ".jpg"

tell application "Pixelmator Pro"
	activate
	
	tell application "System Events" to tell process "Pixelmator Pro" to click menu item "Duplicate" of its menu of menu bar item "File" of menu bar 1
	set sourceDoc to the front document
	
	set targetDoc to make new document with properties {width:3840, height:720}

henrik

tell application "Photos"
	repeat with x in every media item
		if name of x is missing value then
			set name of x to (filename of x)
		end if
	end repeat
end tell

henrik

tell application "Photos"
	repeat with theAlbum in albums of folder "Events"
		set theName to name of theAlbum
		-- Zeropad initial numbers, e.g. turning "12.3 Hi" into "0012.3 Hi".
		set newName to (do shell script "ruby -e 'n = ARGV.first; num, rest = n.split(%{.}, 2); puts num.match?(/\\A\\d+\\z/) && rest ? [ num.rjust(4, %{0}), rest ].join(%{.}) : n' " & (quoted form of theName))
		set name of theAlbum to newName
	end repeat
end tell

henrik

I wanted to export all titles from the Plex library on my Mac and couldn't find a good tool.

This is a tiny, quick-and-dirty Node JS script, using node-plex-api.

It assumes you have node and npm installed.

Then just download this "script.js" and run:

npm install plex-api --save

node script.js your_plex_username your_plex_password > plex.txt

henrik

# Lets you call a block for each item in a list, just like `each`.
# But instead of running serially, it runs in a limited number of parallel threads.
# This is useful when you don't just want one thread per item, e.g. to avoid rate limiting or network saturation.

class EachInThreadPool
  def self.call(inputs, pool_size:, &block)
    queue = Queue.new
    inputs.each { queue << _1 }

    pool_size.times.map {