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import scala.concurrent.Future
import scala.language.higherKinds

sealed trait Monad[T[_]] {
    def map[A, B](value: T[A])(f: A => B): T[B]

    def flatMap[A, B](value: T[A])(f: A => T[B]): T[B]

    def pure[A](x: A): T[A]
}

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class ExecutorService {
    def submit[A](a: Callable[A]): Future[A]
}

trait Callable[A] { def call: A }

trait Future[A] {
    def get: A
    def get(timeout: Long, unit: TimeUnit): A
    def cancel(evenIfRunning: Boolean): Boolean

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contract KeyValueStore {
  uint256 keyIndex;
  
  struct values {
    string value1;
    string value2;
  }
  
  mapping (uint256 => values) Obj;
  

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object GlobalGraph {
    type NodeId = Int
    type Distance = Int
    type Nodes = Set[Node]
    type Path = (Nodes, Distance)
    type Graph = Map[Edge, Distance]
    
    case class Node(id: NodeId, dist: Distance = Int.MaxValue, prevNode: Option[Node] = None)
    case class Edge(from: NodeId, to: NodeId)
}

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public static String lem() {
    System.out.println("lem");
    return "return from lem";
}

public static String foo() {
    int x = 0;
    int y = 5;
    try {
        System.out.println("start try");

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public class Functional {

    public interface Function3<A,B,C,R> {
        R apply(A a, B b, C c) throws Throwable;
    }
    
    public static class Either<L, R> {

        final public Optional<L> left;
        

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function groupBy(xs, key) {
    return xs.reduce(function (rv, x) {
        let v = key instanceof Function ? key(x) : x[key];
        let el = rv.find((r) => r && r.key === v);
        if (el) {
            el.values.push(x);
        } else {
            rv.push({
                key: v,
                values: [x]

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object future {
  def groupedCollect[A, B](xs: Seq[A], par: Int)(f: A => Future[B]): Future[Seq[B]] = {
    val bsF: Future[Seq[B]] = Future.value(Seq.empty[B])
    xs.grouped(par).foldLeft(bsF){ case (bsF, group) => {
      for {
        bs <- bsF
        xs <- Future.collect(group.map(f))
      } yield bs ++ xs
    }}
  }

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[
  {
    "key": "FEATURE_NEW_CREATE_POST",
    "enabled": false,
    "debug": false,
    "permission": {
        "enabled": false,
        "debug": false,
        "user_ids": []
    },

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