schweigert

I am passionate about Ruby, but its execution time compared to other languages is extremely high, especially when we want to use more complex algorithms. In general, data structures in interpreted languages become incredibly slow compared to compiled languages. Some algorithms such as ´n-body´ and ´fannkuch-redux´ can be up to 30 times slower in Ruby than Go. This is one of the reasons I was interested in embedding Go code in a Ruby environment.

For those who do not know how shared libraries operate, they work in a similar way as DLLs in Windows. However, they have a native code with a direct interface to the C compiler.

Note Windows uses the DLL system, and in this case, this does not necessarily have to be in native code.

One example is DLLs written in C#, which runs on a virtual machine. Because I do not use windows, I ended up not testing if it is poss

kule

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'colorize'
end

class MatcherInterface
  def initialize(some_object)
    @some_object = some_object

JunichiIto

This list is based on aliases_spec.rb.

You can see also Module: RSpec::Matchers API.

matcher	aliased to	description
a_truthy_value	be_truthy	a truthy value
a_falsey_value	be_falsey	a falsey value
be_falsy	be_falsey	be falsy
a_falsy_value	be_falsey	a falsy value

yamarten

ホモトピー型理論(HoTT)に入門するために

前置き

HoTTに興味があるCS系の学生が、HoTT本の冒頭を読んだ体験を元に、知っておくと学び易くなりそうな話をまとめてみた。

対象は自分と同じ、型理論は少し知ってる^[1]けどホモトピーとかわからんという人。「型理論は知らんけどホモトピー論と圏論の用語はわかる」という人はそのまま本読めばいいと思うし、両方ともわからない人は学ぶモチベーションがよくわからない(し、とりあえずどちらかを学んだ方がいいと思う)のでとりあえず無視する。

HoTTについてはさわり程度の知識しかないまま書かれているため、話半分に読んでもらった方がいいと思う。

---

1. 「依存型に触ったことある」もしくは「TaPLを部分的にでも読んだ」あたりが基準になるだろうか。

yunusemredilber

<!-- Some form -->  
  <div data-controller="auto-grow-textarea">
    <%= form.text_area :body, cols: 20, row: 2, placeholder: 'Bir yorum yazın...', class:'form-control', data: { action: 'input->auto-grow-textarea#resize', target: 'auto-grow-textarea.input' } %>
  </div>
<!-- Some form continued --> 

yahonda

Ruby 3.1 on Rails

Actions required to use Ruby 3.1.0 with Rails

Rails 7.0.Z

• Rails 7.0.1 is compatible with Ruby 3.1.0.
• Rails 7.0.1 addes net-smtp, net-imap and net-pop gems as Action Mailbox and Action Mailer dependency, you do not need to add them explicitly in your application Gemfile anymore.
• thor 1.2.1 has been released. You will not see DidYouMean::SPELL_CHECKERS.merge deprecate warnings anymore.

Rails 6.1.Z

• Use Rails 6.1.5 to support database.yml with aliases and secrets.yml with aliases.

alexpchin

Alex's Rails Cheat Sheet

I think the most confusing thing that I have found about Ruby on Rails so far has been the transition from (trying to) write code myself to the use of the fabled "Rails Magic". So, to help my own understanding of a few core Ruby on Rails concepts, I have decided to write something on what I think is a CRITICAL topic... the idea of Convention over Configuration and why (in my mind) it is the most important thing that helps Rails become magic!

(This may be a topic that we cover in more detail in class but as I said, I'm writing this for my own understanding... I hope it helps someone else understand things too... Perhaps you can give me a hand when I'm crying next week!)

##Convention over configuration ###What does this "actually" mean...

tokenvolt

inputs = %w[
  CollectionSelectInput
  DateTimeInput
  FileInput
  GroupedCollectionSelectInput
  NumericInput
  PasswordInput
  RangeInput
  StringInput
  TextInput

kotakanbe

モヒカンslackのチャネルリスト(毎日 AM 5:00 自動更新)

詳細はQiita:究極のIT系最新技術情報収集用Slackチーム公開 - モヒカンSlack -を参照。

参加は

• Slackin
• Google Forms

lunark

Public Function GenderEstimate(ByVal strMK As String, Optional strMF As String = "") As String
    GenderEstimate = ""
    strMK = Replace(Replace(Replace(strMK, "　", ""), " ", ""), "「", "")
    strMF = Replace(Replace(StrConv(strMF, vbHiragana), "　", ""), " ", "")

    'デバッグ用。こいつをブレークポイントに持ってきて挙動を確認する
    'If strMK Like "理世" Then
    '    Debug.Print strMK
    'End If