john-kurkowski

scala> val m = Map(1 -> 2, 3 -> 4, 5 -> 6)
map: scala.collection.immutable.Map[Int,Int] = Map((1,2), (3,4), (5,6))

scala> val desiredKeys = Iterable(1, 2, 3)
desiredKeys: Iterable[Int] = List(1, 2, 3)

// Get several values out of a Map, or a default.

scala> desiredKeys map (m.getOrElse(_, -1))
res0: Iterable[Int] = List(2, -1, 4)

john-kurkowski

#!/bin/bash
# Compare Mac OS X 10.6's `sort` to latest GNU Coreutils `sort` which parallelizes by default.
# More info: http://www.cs.ucla.edu/classes/fall10/cs35L/assign/assign9.html

integers=10000000
file=`eval echo "~/Documents/integers1.txt"`

echo "Generating $integers integers..."
if [ ! -f $file ]; then
  for i in $(eval echo "{1..$integers}"); do