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![A screenshot of a terminal with the following text:
$ ./update-nvim.sh
Found nvim at: /usr/local/bin/nvim
Current version: v0.12.2
Checking for latest release...
Latest version: v0.12.3
New version available: v0.12.3
Download URL: https://github.com/neovim/neovim/releases/download/v0.12.3/nvim-linux-x86_64.appimage
Downloading latest AppImage...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 10.9M 100 10.9M 0 0 16.8M 0 --:--:-- --:--:-- --:--:-- 16.8M
Creating backup at: /usr/local/bin/nvim.backup
[sudo] contraseña para fer:
Installing new version...
Successfully updated to v0.12.3!
Backup saved at: /usr/local/bin/nvim.backup](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreibvhetrzi2n25kqfovv3lrjdhi6khmq3oorinahyup7co3m5573oy)
![# auxiliary classes
Point = Data.define(:x, :y)
Rectangle = Data.define(:corner1, :corner2) do
def area
((corner2.x - corner1.x).abs + 1) * ((corner2.y - corner1.y).abs + 1)
end
def xy_bounds
x_min, x_max = [corner1.x, corner2.x].minmax
y_min, y_max = [corner1.y, corner2.y].minmax
[x_min, x_max, y_min, y_max]
end
end
# intentionally naive for argless methods
module Memoize
def memoize(name)
original = instance_method(name)
ivar_name = "@#{name}"
define_method(name) do
if instance_variable_defined?(ivar_name)
instance_variable_get(ivar_name)
else
instance_variable_set(ivar_name, original.bind(self).call)
end
end
end
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreigukgwatrnhywfyvx7lwycxhrrtskqjvfvkmhs5b37svmlqil6vy4)
![# Advent of code - Day 8
class Playground
attr_accessor :boxes, :circuits
def initialize(filename)
@boxes = File.readlines(filename).map { Box[*it.strip.split(',').map(&:to_i)] }
@circuits = boxes.map { |box| [box] }
end
def solution(advanced: false, connections: 1_000)
advanced ? product_last_connection : product_three_closest(connections)
end
## Part 1
def product_three_closest(connections)
make_connections(connections)
circuits.map(&:size).sort.last(3).inject(:*)
end
def make_connections(connections)
distances.take(connections).each { |d| combine_boxes(d.a, d.b) }
end
## Part 2
def product_last_connection
last = make_all_connections
last.a.x * last.b.x
end
def make_all_connections
distances.each do |d|
combine_boxes(d.a, d.b)
return d if @circuits.size == 1
end
raise 'All connections made but multiple circuits remain'
end
## Shared
Box = Data.define(:x, :y, :z) do
def distance(other) # euclidean distance
Math.sqrt(deconstruct.zip(other.deconstruct).sum { |a, b| (a - b)**2 })
end
end
Dist = Data.define(:a, :b, :distance)
def distances
@distances ||= boxes.combination(2).map do |(a, b)|
Dist[a, b, a.distance(b)]
end.sort_by(&:distance)
end
def combine_boxes(a, b)
c_a = circuits.find { |c| c.include?(a) }
c_b = circuits.find { |c| c.include?(b) }
return if c_a == c_b
c_a.concat(circuits.delete(c_b))
end
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreic3v5tzm6ey44wsp3xjiq3dwoczykgtgnqqlkma2ztchfue7zqm2m)
![# frozen_string_literal: true
# Advent of code - Day 7
class Laboratories
attr_reader :data, :source, :cache
SOURCE = 'S'
SPLITTER = '^'
def initialize(filename)
@data = File.readlines(filename).map { it.strip.chars }
@source = data[0].index(SOURCE)
@cache = {}
end
def solution(advanced: false) = advanced ? ray_trace : count_splits
# Part1
def count_splits(rays = [source])
data.inject(0) do |splits, row|
rays = rays.flat_map do |x|
next [x] if row[x] != SPLITTER
splits += 1
[x - 1, x + 1]
end.uniq
splits
end
end
# Part 2
def ray_trace(x = source, y = 0) # rubocop:disable Naming/MethodParameterName
cache[[x, y]] ||=
case data.dig(y, x)
in nil then 1
in SPLITTER then ray_trace(x - 1, y + 1) + ray_trace(x + 1, y + 1)
in String then ray_trace(x, y + 1)
end
end
end
if __FILE__ == $PROGRAM_NAME
obj = Laboratories.new(ARGV[0])
puts obj.solution
puts obj.solution(advanced: true)
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreiaibdvezivjmywmvpeuwfbthjx4fid3cdfvummbtpukd5bmkmshbe)
![# frozen_string_literal: true
# Advent of code - Day 6
class TrashCompactor
attr_reader :values, :operators
def initialize(filename) = @filename = filename
def solution(advanced: false) = advanced ? sum_columns : sum_operations
def sum_operations
*values, operators = File.readlines(@filename).map { it.strip.split }
operators.each_with_index.reduce(0) do |sum, (operator, index)|
operands = values.map { |row| row[index].to_i }
sum + operands.reduce(operator.to_sym)
end
end
def sum_columns
read_operations.reduce(0) do |sum, operation|
operator = operation.first[-1]
operands = operation.map(&:to_i)
sum + operands.reduce(operator.to_sym)
end
end
def read_operations
columns = File.readlines(@filename).map { it.chomp.chars }.transpose
operations = columns.map(&:join).slice_after { |el| blank?(el) } # split on blank columns
operations.map { it.reject { |el| blank?(el) } }
end
def blank?(str) = str.match?(/\A\s+\Z/)
end
if __FILE__ == $PROGRAM_NAME
obj = TrashCompactor.new(ARGV[0])
puts obj.solution
puts obj.solution(advanced: true)
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreidaso2pntypgb25upffwnot54utzibh43tpa4dg3b6x7s2vb3yxgm)
![# frozen_string_literal: true
# Advent of code - Day 5
class Cafeteria
attr_reader :ranges, :ids
def initialize(filename)
range_data, id_data = File.read(filename).strip.split("\n\n")
@ranges = read_ranges(range_data).sort_by(:begin)
@ids = id_data.split("\n").map(&:to_i)
end
def read_ranges(ranges) = ranges.split("\n").map { |line| range(line) }
def range(line) = Range.new(*line.split('-').map(&:to_i))
def solution(advanced: false) = advanced ? count_ranges : count_fresh_ids
def count_fresh_ids = @ids.count { |id| ranges.any? { it.include? id } }
def count_ranges = combine(ranges).sum(&:size)
def combine(sorted)
sorted[1..].each_with_object([sorted[0]]) do |current, combined|
if combined[-1].overlap?(current)
combined[-1] = join(combined[-1], current)
else
combined << current
end
end
end
def join(left, right) = left.begin..[left.end, right.end].max
end
if __FILE__ == $PROGRAM_NAME
obj = Cafeteria.new(ARGV[0])
puts obj.solution
puts obj.solution(advanced: true)
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreifvqjbxskvsryqikerslsrhnee34wwznop5nbgwy6cx2che57ibsu)
![# frozen_string_literal: true
# Advent of code - Day 4
class PrintingDepartment
attr_reader :data
ROLL = '@'
REMOVED = 'x'
def initialize(filename)
@data = File.readlines(filename).map { it.strip.chars }
end
def solution(advanced: false)
advanced ? count_and_remove : count_accesible_rolls
end
# part 1
def count_accesible_rolls(remove: false)
rows.sum do |r|
cols.count { |c| roll?(r, c) && accessible?(r, c, remove:) }
end
end
# part 2
def count_and_remove(total = 0)
loop do
removed = count_accesible_rolls(remove: true)
break total if removed.zero?
total += removed
end
end
def accessible?(row, col, remove: false)
(bounding_box(row, col).count { roll?(*it) } < 4).tap do |value|
data[row][col] = REMOVED if value && remove
end
end
def bounding_box(row, col)
[row - 1, row, row + 1].product([col - 1, col, col + 1]) - [[row, col]]
end
def roll?(row, col) = tile(row, col) == ROLL
def tile(row, col) = rows === row && cols === col && data[row][col]
def rows = 0...data.size
def cols = 0...data[0].size
end
if __FILE__ == $PROGRAM_NAME
obj = PrintingDepartment.new(ARGV[0])
puts obj.solution
puts obj.solution(advanced: true)
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreicum6ris6ddyzqbwjgump5mjb64jh5gbmcpo77lncnfbzzxofvj7m)
![# frozen_string_literal: true
# Advent of code - Day 3
class Lobby
attr_reader :data
def initialize(filename)
@data = File.readlines(filename).map(&:strip)
end
def solution(advanced: false) = sum_of_banks(advanced ? 12 : 2)
def sum_of_banks(cells)
data.sum { |bank| max_joltage(bank.chars, cells).join.to_i }
end
def max_joltage(batteries, cells)
return [] if cells == 0
value = batteries[..-cells].max
position = batteries.index(value)
[value] + max_joltage(batteries[(position + 1)..], cells - 1)
end
end
if __FILE__ == $PROGRAM_NAME
obj = Lobby.new(ARGV[0])
puts obj.solution
puts obj.solution(advanced: true)
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreigexh4h34hjgfs7mlhix4phe2j56hrhchzpx5pp356lvgexctxjxa)
![# frozen_string_literal: true
# Advent of code - Day 2
class GiftShop
attr_reader :data
def initialize(filename)
@data = File.read(filename).split(',')
end
def solution(advanced: false)
sum_invalid_ids(advanced ? TWICE_OR_MORE : TWICE)
end
TWICE = /\A(\d+)\1\Z/
TWICE_OR_MORE = /\A(\d+)\1+\Z/
def sum_invalid_ids(invalid)
data.sum { |line| range(line).select { invalid =~ it.to_s }.sum }
end
# "xx-yy" => xx.to_i..yy.to_i
def range(line) = Range.new(*line.split('-').map(&:to_i))
end
if __FILE__ == $PROGRAM_NAME
obj = GiftShop.new(ARGV[0])
puts obj.solution
puts obj.solution(advanced: true)
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreihzjwnhoy3kwz2n3o4jvdkea5jxduwn6u53h3ptgxsnpx665v7liq)
![# frozen_string_literal: true
# Advent of code - Day 1
class SecretEntrance
attr_reader :data, :dial
def initialize(filename)
@data = File.readlines(filename).map(&:strip)
@dial = 100
end
def solution(advanced: false)
advanced ? with_passing : rotate_and_count_zeroes
end
DIRECTIONS = { 'L' => -1, 'R' => 1 }.freeze
def rotate_and_count_zeroes(position = 50)
data.sum do |line|
change = value(line) * direction(line)
position = (position + change) % dial
position.zero? ? 1 : 0
end
end
def direction(line) = DIRECTIONS[line[0]]
def value(line) = line[1..].to_i
def with_passing(position = 50)
data.sum do |line|
value(line).times.sum do
position = (position + direction(line)) % dial
position.zero? ? 1 : 0
end
end
end
end
if __FILE__ == $PROGRAM_NAME
obj = SecretEntrance.new(ARGV[0])
puts obj.solution
puts obj.solution(advanced: true)
end](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:gvwe4dxzogskc4s2l2x46ydg/bafkreidtxigoxrkprvuv3v63luervbafpdttmnjcdp7vu3pp5lpraxdwle)
