jrunning

require 'benchmark/ips'
require 'securerandom'

def trim_quotes_wiktor(str)
  str.gsub(/\A"(.*)"\Z/m, '\1')
end

def trim_quotes_sawa(str)
  str.dup.tap do |s|
    s[0] = s[-1] = "" if s[0] == '"' and s[-1] == '"'

jrunning

require 'benchmark/ips'

def data
  Array.new(40000) do
    [ rand(-100..0), rand(0..100) ]
  end
end

def assign_destruct(data)
  data.map {|a| a[0] = a[0].abs.to_s; a }

jrunning

require 'benchmark/ips'

module RescueVsRespondTo
  module HelperClasses
    class Receiver
      def dummy; true end
      def does_exist; true end
    end

    class Great20Grandparent < Receiver; end

jrunning

# base58_to_int and int_to_base58 loosely based on base58 gem by Douglas F. Shearer
# https://github.com/dougal/base58

ALPHABET = "123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ".chars
BASE = ALPHABET.size

def base58_to_int(base58_val)
  base58_val.chars
    .reverse_each.with_index
    .reduce(0) do |int_val, (char, index)|

jrunning

require "benchmark/ips"

class Test
  def initialize(test_value)
    @test_value = test_value

    assert_equal(self_merge_with_block(@test_value), map_then_hash(@test_value))
  end

  def self_merge_with_block(hsh)

jrunning

require "benchmark/ips"

ARRAY_SIZE = 5 # 5 rows and 5 columns
CHANCE = 0.33

# Returns the given 5-element array with a 33% chance of one item being changed
def dirty_row(row)
  return row if rand > CHANCE
  row.dup.tap { row[rand 0..(ARRAY_SIZE - 1)] = rand 0..99 }
end

jrunning

### Keybase proof

I hereby claim:

  * I am jrunning on github.
  * I am jrunning (https://keybase.io/jrunning) on keybase.
  * I have a public key whose fingerprint is 19E4 9FBC E975 8DC8 B15F  A5D3 2004 7142 D7E6 D44A

To claim this, I am signing this object:

jrunning

str = "ascii".force_encoding(Encoding::ASCII_8BIT)
puts "#{str}foo".encoding # => ASCII-8BIT
puts " #{str}foo".encoding # => UTF-8

jrunning

Okay, let's work through this iteratively, starting with your example:

str = "2:README:19:string:Hello world!spec.rb:20:string:describe RBFS1:rbfs:4:0:0:"
entries = {} # No entries yet!

The very first thing we need to know is how many files there are, and we know we know that's the number before the first ::

num_entries, rest = str.split(':', 2)
num_entries = Integer(num_entries)

num_entries is now 2

jrunning

class Regexp
  def to_proc
    proc {|str| match(str) && $~.to_s }
  end
end

arr = [ "foo", "bar 123", "baz", "456", "789 qux" ]

p arr.find(&/bar/) # => "bar 123"