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View Backend.java
package com.example.android2111.app;
import java.util.List;
import retrofit2.Call;
import retrofit2.Retrofit;
import retrofit2.http.GET;
import retrofit2.http.Path;
import retrofit2.converter.gson.GsonConverterFactory
View gist:43c48e2bf2d4f4e88fbc
scala> :paste
// Entering paste mode (ctrl-D to finish)
trait Context
object Helper {
def stuff(implicit c: Context) = 3
def stuff_=(i: Int)(implicit c: Context) = ()
// woot
View gist:c003923f417c74b3329c
class Str(val str: String) extends AnyVal {
def isEmpty = str == null || str.isEmpty
def _1 = str.charAt(0)
def _2 = str.substring(1)
}
object Str {
def unapply(str: String): Str = new Str(str)
}
object StrTest {
View gist:0e47ce989aa928afe055
object MySorts extends Ordering.ExtraImplicits {
def mergeSort[T : Ordering](elems: List[T]): List[T] = elems match {
case Nil | _::Nil => elems
case that =>
type L = List[T]
def merge(l1: L, l2: L, acc: L): L = l1 -> l2 match {
case (a::as, b::_) if a < b => merge(as, l2, a::acc)
case (_, b::bs) => merge(l1, bs, b::acc)
case (a::as, _) => merge(as, l2, a::acc)
View gist:b9d47b352ca460590023
Compiled from "MyInterface.java"
public interface batik.MyInterface {
public abstract java.util.List<java.lang.String> strings();
public int totalLength(); // OBSERVERA DEFAULT METHOD I INTERFACE
Code:
0: iconst_0
1: istore_1
2: aload_0
3: invokeinterface #1, 1 // InterfaceMethod strings:()Ljava/util/List;
View gist:276ec14faa79be2d2b49
trait WkRef[+T >: Null <: AnyRef] extends WeakReference[T @uncheckedVariance] {
def map[U >: Null <: AnyRef](f: T => U): WkRef[U] = if(isDefined) new WeakRef[U](f(get)) else WeakNone
def flatMap[U >: Null <: AnyRef](f: T => WkRef[U]) = if(isDefined) f(get) else WeakNone
def isDefined: Boolean
def foreach[U](f: T => U) = if(isDefined) f(get)
def filter(f: T => Boolean): WkRef[T] = if(isDefined && f(get)) this else WeakNone
}
object WkRef {
def apply[T >: Null <: AnyRef](t: T) = t match {
case null => WeakNone
@Arneball
Arneball / gist:5b7e2e90d889ef9d30ed
Created Jun 14, 2014
Extractor object generation
View gist:5b7e2e90d889ef9d30ed
/**
* Created by arneball on 2014-06-14.
*/
object ExtractorTest extends App with Integral.ExtraImplicits{
@extract def longString(str: String) = str.length > 1
@extract def cool(int: Int) = Option(int).filter{ 2 < _ }.map{ 2 * }
@extract def evensum[T : Integral](l: List[T]) = {
l.sum % implicitly[Integral[T]].fromInt(2) == 0
View gist:392ea620693697414b24
/**
* Created by arneball on 2014-05-31.
*/
object LazyTest extends App {
val n = new LazyTest
try {
println(n.lazyIntInDaHouse)
} catch { case t: Throwable => }
println(n.lazyIntInDaHouse)
}
View gist:fe41dae3543c5f681c57
object ToFromMap {
implicit def materialize[T]: ToFromMap[T] = macro impl[T]
def impl[T: c.WeakTypeTag](c: Context): c.Expr[ToFromMap[T]] = {
import c.universe._
val wt = weakTypeOf[T]
// Gets the type parameters, eg Holder[T, J] => List(T, J)
val baseTypes = wt.baseClasses.head.asType.typeParams.map{ _.asType.toType }
// Gives a Map(T -> Int, J -> Double) if we are extracting Holder[Int, Double]
val myTypes = baseTypes zip wt.typeArgs toMap;
@Arneball
Arneball / gist:a222b99a7b689bde9585
Last active Aug 29, 2015
Macro annotation extension method
View gist:a222b99a7b689bde9585
class ext extends StaticAnnotation {
def macroTransform(annottees: Any*) = macro extension.impl
}
object extension {
def impl(c: Context)(annottees: c.Expr[Any]*): c.Expr[Any] = {
import c.universe._
annottees.map{ _.tree }.head match {
case q"def $name[..$tp](...$params): $ret = $b" =>
val Seq(Seq(thiz, rest @ _*), rest2 @ _*) = params
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