Ruby like regular expression matching for Swift

gistfile1.swift

// Ruby like regular expression matching
infix operator =~ {}
func =~ (input: String, pattern: String) -> Bool
{
    return input.rangeOfString(pattern, options: .RegularExpressionSearch) != nil
}

// Example
if "foobaar" =~ "[a-z]*"
{
    println("Only letters")
}