| require 'openssl' | |
| require 'jwt' | |
| require 'awesome_print' | |
| rsa_private = OpenSSL::PKey::RSA.generate 2048 | |
| rsa_public = rsa_private.public_key | |
| payload = { | |
| 'data' => 'test', | |
| 'projects.quote.request' => true, |
| str = "Today we (professors + teaching assistants) proctored a midterm exam for a class of about 80 students. There was undoubtedly a 'hardest' question on the exam, since nearly the entire classroom of students asked us how to proceed with that question. To be fair, we didn't give any hints, but it was clear that one had to use a definition to be able to proceed." | |
| res = str.gsub(/\b[[:alpha:]]+\b/) do |word| | |
| if word.length < 4 | |
| word | |
| else | |
| word[0] + # first letter | |
| word[1..-2].chars.shuffle.join('') + | |
| word[-1] # last letter | |
| end |
| class Proc | |
| def and(other_proc) | |
| ->(*args) { call(*args) && other_proc.call(*args) } | |
| end | |
| end | |
| def word_or_number(n) | |
| div3 = ->(x) { x.modulo(3).zero? } | |
| div5 = ->(x) { x.modulo(5).zero? } | |
| hello world! |
| module Enumerable | |
| def count_by(&block) | |
| Hash[group_by(&block).map { |key,vals| [key, vals.size] }] | |
| end | |
| end |
| def ts_to_oid(timestamp) | |
| unixtime = timestamp.to_i.to_s(16) | |
| BSON::ObjectId.from_string(unixtime + '0' * 16) | |
| end |
| def highlight_oid(oid) | |
| str = oid.to_s | |
| rgx = /(?<ts>\w{8})(?<machine>\w{6})(?<process>\w{4})(?<counter>\w{6})/ | |
| m = str.match(rgx) | |
| require 'colorize' | |
| print m[:ts].red | |
| print m[:machine].yellow | |
| print m[:process].light_magenta | |
| print m[:counter].green | |
| puts |
| class Cell | |
| attr_accessor :alive | |
| attr_accessor :coordinates | |
| attr_accessor :neighbours | |
| attr_accessor :live_neighbours | |
| def initialize(live_cell_ratio) | |
| @alive = ([true] + Array.new(live_cell_ratio, false)).sample | |
| @coordinates = [] | |
| @neighbours = [] |
| package main | |
| import ( | |
| "encoding/base64" | |
| "fmt" | |
| "github.com/VirgilSecurity/virgil-sdk-go" | |
| "io/ioutil" | |
| ) | |
| func main() { |
When running this command for the first time
$ bundle exec rake db:create
you may get this error
Couldn't create database for {"adapter"=>"postgresql", "encoding"=>"unicode", "pool"=>5, "username"=>"tulenmenu", "password"=>"tulenmenu", "database"=>"tulenmenu_development"}
FATAL: role "tulenmenu" does not exist