Windows でいう win + D
Mac OS 10.5 だけかもしれない

• http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%201

val r = (0 to 999)
((r by 3) ++ (r by 5)).distinct.sum // => 233168

• http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%202

import scala.collection.mutable

def isEven(n: BigInt): Boolean = (n % 2 == 0)

var fibs = mutable.Map[Int, BigInt]()
def fib(n: Int): BigInt = {
  if (fibs.isDefinedAt(n)) return fibs(n)
  if (n <= 2) return 1;
  fibs(n) = fib(n - 1) + fib(n - 2)
  return fibs(n)
}

var result = (1 to 28).map(n => fib(n)).reduceLeft { (a, b) => if (isEven(b)) println(a, b); if (isEven(b)) a + b else a + 0 }
println(result)
//(1,2)
//(3,8)
//(11,34)
//(45,144)
//(189,610)
//(799,2584)
//(3383,10946)
//(14329,46368)
//(60697,196418)
//257115

• http://blog.livedoor.jp/dankogai/archives/50958771.html を参考にして

def collatz(n: Int, list: List[Int] = Nil): List[Int] = n match {
  case 1               => (n :: list).reverse
  case n if n % 2 == 0 => collatz(n / 2, n :: list)
  case _               => collatz(3 * n + 1, n :: list)
}

println(collatz(69)) // => List(69, 208, 104, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1)

def collatz(n: Int) = n match {
  case n if n % 2 == 0 => n / 2
  case n               => (3 * n) + 1
}

def nestWhileList[A](f: A => A, initial: A, p: A => Boolean) = {
  val result = Stream.iterate(initial)(f).takeWhile(p).toList
  result :+ f(result.last)
}

val cs = nestWhileList(collatz(_: Int), 200, (_: Int) != 1)

scala> "foo".

+                     asInstanceOf          charAt                codePointAt           codePointBefore       codePointCount        compareTo             compareToIgnoreCase   concat
contains              contentEquals         endsWith              equalsIgnoreCase      getBytes              getChars              indexOf               intern                isEmpty
isInstanceOf          lastIndexOf           length                matches               offsetByCodePoints    regionMatches         replace               replaceAll            replaceFirst
split                 startsWith            subSequence           substring             toCharArray           toLowerCase           toString              toUpperCase           trim

“foo” で　タブを押すと補完される

<% assign var="url" value="http://`$rows.foo`.sample.com" %>

/_ah/admin/

$ [ -d /var/log/hoge ] && echo 'HELLO'
$ [ ! -d /var/log/hoge ] && echo 'HELLO' # 否定

def deleteWord(replaceWords: String, originalWords: String) = {
  val pattern = "[" + replaceWords + "]"
  pattern.r.replaceAllIn(originalWords, " ").mkString
}

println(deleteWord("golf","flogwaiurhgm"))

http://d.hatena.ne.jp/mzp/20100811/deleteWord

サイトの一部に http で通信しているものがあり、完全に暗号化できているわけではないというエラー。