10 Io one liners

one_liners.io

// 1. Multiply Each Item in a List by 2

list(1,2,3,4,5) map(v, v*2) println

// 2. Sum a List of Numbers

list(1,2,3,4,5) reduce(+) println

// 3. Verify if a Word Exists in a String

list("hello", "foo") contains("hello") println

// 4. Read a File

File with("foo.txt") readLines println

// 5. Happy Birthday to You

for (i, 1, 4, if(i == 3, "Happy Birthday dear Io, " println, "Happy Birthday to You, " println))

// 6. Filter list of numbers

list(49, 58, 76, 82, 88, 90) select(v, v > 60) println

// 7. Fetch and Parse an XML web service

SGML
URL with("http://search.twitter.com/search.atom?&q=scala") fetch asXML println

// 8. Find minimum or maximum in a List

list(1,2,3,4,5) max println
list(1,2,3,4,5) min println

// 9. Parallel Processing

Thread createThread("Date now println")

// 10. Sieve of Eratosthenes
// I've failed to fit the Sieve into one line. But still, 4 lines isn't too bad for a first go.
Range

n := 120
primes := 2 to(n+1) asList
primes foreach(p, for(i, p, n+1, if(primes contains(p*i), primes remove(p*i))))
primes println