mizchi

非破壊 TypeSctript

mizchi / TypeScript Meetup 2

---

About

• mizchi / 竹馬光太郎
• フロントエンドと Node.js

voluntas

負荷試験コトハジメ

更新:	2021-05-23
作者:	@voluntas
バージョン:	2021.1
URL:	https://voluntas.github.io/

suzujun

signed: 符号あり

数値範囲	mysql	java	golang	javascript
-128 ~ 127	tinyint	byte	int8	-
-32768 ~ 32767	smallint	short	int16	-
-8388608 ~ 8388607	mediumint	(int)	(int32)	-
-2147483648 ~ 2147483647	int	int	int32	-
-9223372036854775808 ~ 9223372036854775807	bigint	long	int64	○

※カッコは補うためのタイプ

nashirox

#
# 数字
#

# 全て数値（全角）
/\A[０-９]+\z/

# 全て数値（半角）
/\A[0-9]+\z/

ChuckJHardy

class MyJob < ActiveJob::Base
  queue_as :urgent

  rescue_from(NoResultsError) do
    retry_job wait: 5.minutes, queue: :default
  end

  def perform(*args)
    MyService.call(*args)
  end

gakuzzzz

Scala の省略ルール早覚え

このルールさえ押さえておけば、読んでいるコードが省略記法を使っていてもほぼ読めるようになります。

メソッド定義

def concatAsString(a: Int, b: Int): String = {
  val a_ = a.toString();
  val b_ = b.toString();

sergiotapia

import (
    "crypto/md5"
    "encoding/hex"
)

func GetMD5Hash(text string) string {
    hasher := md5.New()
    hasher.Write([]byte(text))
    return hex.EncodeToString(hasher.Sum(nil))
}

efrenfuentes

Authentication from Scratch with Rails 3.2.5

Rails 3.1 gives us a really easy way to authenticate users in our app: http_basic_authenticate_with. Using it, all we need to do is create a model for the user (certainly, User model :P) with an attribute called password_digest and some views feature for login and register users. After all, let's relax and let Rails do the hard work.

What we'll need

Gemfile

gem 'bcrypt-ruby', '~> 3.0.0'

Model

First at all, an User model which we can generate by following: rails g model user email:string password_digest:string and then add the following methodo call to generated class: has_secure_password

dhh

# Bulk API design
#
# resources :posts
class PostsController < ActiveController::Base
  # GET /posts/1,4,50,90
  # post_url([ @post, @post ])
  def show_many
    @posts = Post.find(params[:ids])
  end