| package scodec.bits | |
| import java.nio.ByteBuffer | |
| import java.util.concurrent.atomic.AtomicLong | |
| import scala.collection.GenTraversableOnce | |
| /** | |
| * Persistent vector of bits, stored as bytes. | |
| * | |
| * Bits are numbered left to right, starting at 0. |
| import sbt.complete.DefaultParsers | |
| object MyApp extends App { | |
| println(DefaultParsers.validID("test")) | |
| } |
Distribution of Option, Either, Try, scalaz.\/, scalaz.Validation on a large project that started in 2009 and has about ~425,000 SLOC of Scala:
› find . -name '*.scala' -exec grep -o "Option" {} \; | wc -l
7747
› find . -name '*.scala' -exec grep -o "Either" {} \; | wc -l
547
› find . -name '*.scala' -exec grep -o "Try" {} \; | wc -l
129
› find . -name '*.scala' -exec grep -o "\\\/" {} \; | wc -l
2159
| scala> import org.scalatest._ | |
| scala> import Matchers._ | |
| scala> import Inspectors._ | |
| scala> trap { List('a', 'b') should have length 1 } | |
| res0: Throwable = org.scalatest.exceptions.TestFailedException: List(a, b) had length 2 instead of expected length 1 | |
| scala> trap { List(1, 2, 3) should contain (4) } | |
| res1: Throwable = org.scalatest.exceptions.TestFailedException: List(1, 2, 3) did not contain element 4 |
| import shapeless._ | |
| trait F[A] { | |
| def xmap[B](f: A => B, g: B => A): F[B] | |
| def as[B] = new AsAux[B] | |
| class AsAux[B] { | |
| def apply[C](implicit gen: Generic.Aux[B, C], ev: A =:= C): F[B] = | |
| xmap(a => gen.from(ev(a)), b => gen.to(b).asInstanceOf[A]) | |
| } | |
| } |
| import scala.collection.JavaConverters._ | |
| import java.net.URL | |
| import java.util.Enumeration | |
| import com.typesafe.config._ | |
| import org.osgi.framework.Bundle | |
| import org.osgi.framework.wiring._ | |
| object OsgiConfigFactory { |
| import scala.collection.JavaConverters._ | |
| import scalaz.std.option._ | |
| import java.net.URL | |
| import java.util.Enumeration | |
| class CompositeClassLoader(parent: ClassLoader, members: List[ClassLoader]) extends ClassLoader(parent) { | |
| override def findClass(name: String): Class[_] = { | |
| def tryLoadClass(cl: ClassLoader): Option[Class[_]] = | |
| try some(cl.loadClass(name)) |
| // Put in src/test/scala | |
| object Foo { | |
| // From main slf4j-api JAR | |
| val logger = org.slf4j.LoggerFactory.getLogger("Foo") | |
| // From test slf4j-api JAR | |
| val bp = new org.slf4j.helpers.BogoPerf | |
| } |
| import scalaz.std.option._ // Import the some and none functions | |
| import scalaz.syntax.std.option._ // Import the syntax for calling ~ on Option | |
| import scalaz.std.AllInstances._ // Import all typeclass instances for standard datatypes | |
| ~some(10) // 10 | |
| ~none[Int] // 0 | |
| ~some("test") // "test" | |
| ~none[String] // "" |