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{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
    ruby-nix.url = "github:inscapist/ruby-nix";
    bundix = {
      url = "github:inscapist/bundix/main";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    fu.url = "github:numtide/flake-utils";
    bob-ruby.url = "github:bobvanderlinden/nixpkgs-ruby";

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require 'bigdecimal'

module CoreExtensions
  module String
    def to_boolean
      !!(self =~ /^(true|t|yes|y|1)$/i)
    end
  end

  module Integer

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require 'bundler/setup'
require 'active_model'
require 'active_support/concern'
require 'virtus'

module EventParams
  include Virtus.module
  extend ActiveSupport::Concern
  include ActiveModel::Validations

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require 'migration/rebuild'

class ConvertFilmIdsToStrings < ActiveRecord::Migration[5.1]
  include Migration::Rebuild

  EVENT_VIEWS = {
    # view:              version
    eventbase_events:    26,
    eventbase_entities:  34,
    admin_entity_stats:  8,

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require 'benchmark/ips'
require 'benchmark/memory'

# IPS = iterations per second
# https://github.com/evanphx/benchmark-ips

string = "123"

%i[ips memory].each do |bench|
  puts bench.upcase

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Struct for throwaway objects, OpenStruct only when keys may change, or you have a hash and must have accessor methods.

# Fastest, needs to initialize a Struct first
T = Struct.new(:name)
t1 = T.new('test')
t1.name # => 'test'
t1.foo # => error!

# Fast, needs to use hash lookups

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{ nixpkgs ? import <nixpkgs> {} }:

with nixpkgs;

let

  ImageBase = perlPackages.buildPerlPackage {
    pname = "Image-Base";
    version = "1.17";
    src = fetchurl {

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{pkgs, lib, system, ...}:

let
  notBroken = (p: lib.isDerivation p && !(p.meta.broken or false));

in
{
  services.hoogle = {
    enable = true;
    port = 8081;

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import Data.Monoid
import Data.Foldable

data Tree a = Empty
            | Node (Maybe a)
                   (Tree a)
                   (Tree a)
            deriving (Show)

instance Foldable Tree where