okabe-yuya

defmodule Product do
  defstruct name: "", price: 0
  def fmap(func, %Product{ name: name, price: price }) do
    { n_name, n_price } = func.(name, price)
    %Product{ name: n_name, price: n_price }
  end
end

stones = %Product{ name: "大人気!その辺に落ちていた石の詰め合わせ", price: 2000 }
summer_sale = Product.fmap(fn name, price -> { "[SummerSale]: #{name}", price - 200 } end, stones)

okabe-yuya

git branch | grep -ve " master$" | xargs git branch -D

okabe-yuya

import functools

class BloomFilter:
  def __init__(self, filter_size):
    self.filter_size = filter_size
    self.bloom_filter = [0 for _ in range(filter_size)]
  
  def exist_v(self, val):
    indexes = self.n_hash(val)
    for index in indexes:

okabe-yuya

class Iterator
  def next
    raise NotImplementedError.new("#{self.class}##{__method__} が実装されていません")
  end
  
  def has_next
    raise NotImplementedError.new("#{self.class}##{__method__} が実装されていません")
  end
end

okabe-yuya

# Adapte
module Adaoter
  class Queue
    attr_reader :queue
    
    def initialize
      @queue = []
    end
    
    def enqueue(val)

okabe-yuya

class Sward
  attr_reader :options

  def initialize
    @options = {}
  end

  def cost
    raise NotImplementedError.new("#{self.class}##{__method__} が実装されていません")
  end

okabe-yuya

# Your code here!
class Notify
  def exec(*data)
    raise NotImplementedError.new("#{self.class}##{__method__} が実装されていません")
  end
end

class User< Notify
  def exec(*data)
    puts "send to User #{data}"

okabe-yuya

class StringArray
  attr_reader :s_array
  def initialize
    @s_array = ''
  end
  
  def push(v)
    @s_array += "#{v}SPLIT"
    self
  end

okabe-yuya

use std::collections::HashMap;

fn main(){
    let field_name = String::from("Favorite color");
    let field_value = String::from("Blue");
    let mut map = HashMap::new();
    map.insert(&field_name, field_value);
    
    let score = map.get(&field_name);
    match score {

okabe-yuya

/* プレイヤー情報 */
CREATE TABLE IF NOT EXISTS players (
  player_id SERIAL PRIMARY KEY,
  name VARCHAR(50) NOT NULL,
  created_at TIMESTAMP NOT NULL,
  updated_at TIMESTAMP NOT NULL,
  name_changed_at TIMESTAMP NOT NULL,
  last_loggined_at TIMESTAMP NOT NULL
);