yamaimo

public class AlphaBetaCom: Player {
  private var color: Board.Color
  private lazy var opponent: Board.Color = self.color.opponent
  private var depth: Int

  public init(color: Board.Color, depth: Int = 3) {
    self.color = color
    self.depth = depth
  }

yamaimo

# 毎日『m段上ってn段下がる』を繰り返したら、x日目にd段目に初めて着いた。
# xをd,m,nで表せ。
# 文字はすべて正の整数で、m>nとする。
# https://twitter.com/hyuki/status/1134018952416321536

class Stairs
  def initialize(dest, up, down)
    @dest = dest
    @up = up
    @down = down

yamaimo

#!/usr/bin/env ruby

require 'fileutils'

USAGE =<<END_OF_USAGE
$ ./snapshot <target>.<ext>
Save snapshot of taget into HISTORY_DIR/<target>-yyyymmdd.<ext>
END_OF_USAGE

# 設定 --------------------