erukiti

Java8の感想

• ラムダは超便利。無いというのはあり得ない。
• streamは便利だけど、メソッドが意外に少なくて物足りない
• Optional型は便利なので使っていきたい

関数型要素が増えててかなり書きやすくなってる。が、Scala や Ruby に比べて無理がある感は否めない。

RxJavaの感想

erukiti

#! /usr/bin/env coffee

assert = require('assert')
Rx = require('rx')

collectionAssert = (expected, actual) ->
  if expected.length != actual.length
    assert(false, 'Not eual length.')

  isOk = true

erukiti

#! /usr/bin/env coffee

p4 = (lists) ->
  lists.sort((a, b) -> b.toString()[0] - a.toString()[0]).map((n) -> n.toString()).join('')

console.log(p4([50, 2, 1, 9]))

erukiti

#! /usr/bin/env coffee

solver = (n, s)->
  if n == 10
    console.log(s) if eval(s) == 100
    return
  solver(n + 1, s + '+' + n)
  solver(n + 1, s + '-' + n)
  solver(n + 1, s + n)

erukiti

#! /usr/bin/env coffee

p4 = (lists) ->
  lists.sort((a, b) -> (b.toString() + a.toString()) - (a.toString() + b.toString())).map((n) -> n.toString()).join('')

console.log(p4([50, 2, 1, 9]))
console.log(p4([50, 2, 1, 5, 56]))
console.log(p4([42, 423, 420]))

erukiti

#! /usr/bin/env ruby
# coding: utf-8

words = []
n = STDIN.gets.strip.to_i
(0 ... n).each do
  words << STDIN.gets.strip
end

words = words.sort do |a, b| 

erukiti

#!/usr/bin/env ruby
# coding: utf-8

sum = 0
num = 0
STDIN.gets #discard
STDIN.gets.strip.each_byte do |ch|
  sum += 69 - ch if ch < 69
  num += 1
end

erukiti

#! /usr/bin/env ruby
# coding: utf-8

n = STDIN.gets.to_i
pt = []

max = 0
sum = 0
list = []
(0...n).each do |i|

erukiti

#! /usr/bin/env ruby
# coding: utf-8

n = STDIN.gets.to_i
x = []
y = []
(0 ... n).each do |i|
  x[i], y[i] = STDIN.gets.strip.split(' ')
  x[i] = x[i].to_i
  y[i] = y[i].to_i

erukiti

# coding: utf-8

class Fluent::InTailMysql < Fluent::Input
  Fluent::Plugin.register_input('tail_mysql', self)

  require 'mysql'

  config_param :host, :string
  config_param :user, :string
  config_param :password, :string