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{
  "last_node_id": 3,
  "last_link_id": 2,
  "nodes": [
    {
      "id": 2,
      "type": "Call LLM Basic",
      "pos": [
        42,
        190

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# QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
# Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

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import scala.concurrent.{ExecutionContext, Future}

trait Retryable {
  // Returning T, throwing the exception on failure
  @annotation.tailrec
  final def retryDangerously[T](n: Int)(fn: => T): T = {
    util.Try { fn } match {
      case util.Success(x) => x
      case _ if n > 1      => retryDangerously(n - 1)(fn)
      case util.Failure(e) => throw e

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       AsyncTask<Void, Void, String> task = new AsyncTask<Void, Void, String>() {
            @Override
            protected String doInBackground(Void... params) {
                AdvertisingIdClient.Info idInfo = null;
                try {
                    idInfo = AdvertisingIdClient.getAdvertisingIdInfo(getApplicationContext());
                } catch (GooglePlayServicesNotAvailableException e) {
                    e.printStackTrace();
                } catch (GooglePlayServicesRepairableException e) {
                    e.printStackTrace();

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  /**
   * Exercise 3
   */
    def countChange(money: Int, coins: List[Int]): Int = {
      def count(m: Int, sortedCoins: List[Int]) : Int = {
        if (sortedCoins.isEmpty) 0
        else if (m - sortedCoins.head == 0) 1
        else if (m - sortedCoins.head < 0) 0
        else countChange(m - sortedCoins.head, sortedCoins) + countChange(m, sortedCoins.tail)
      }

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    def balance(chars: List[Char]): Boolean = {
      def balanced(chars: List[Char], currently_open_parens: Int): Boolean = {
        if (chars.isEmpty) currently_open_parens == 0
        else {
          if(chars.head == '(') balanced(chars.tail, currently_open_parens+1)
          else {
            if(chars.head == ')' ) {
              currently_open_parens > 0 && balanced(chars.tail, currently_open_parens-1)
            } else balanced(chars.tail, currently_open_parens)
          }

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# A sample Guardfile
# More info at https://github.com/guard/guard#readme

## Uncomment and set this to only include directories you want to watch
# directories %w(app lib config test spec features) \
#  .select{|d| Dir.exists?(d) ? d : UI.warning("Directory #{d} does not exist")}

## Note: if you are using the `directories` clause above and you are not
## watching the project directory ('.'), then you will want to move
## the Guardfile to a watched dir and symlink it back, e.g.

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    module MethodLogger
      def self.included(base)
        methods = base.instance_methods(false) + base.private_instance_methods(false)
        base.class_eval do
          methods.each do |method_name|
            original_method = instance_method(method_name)            
            Rails.logger.info "creating override method for #{method_name} #{base}"
            define_method(method_name) do |*args, &block|
              Rails.logger.info "-> #{base}##{method_name}(#{args.inspect})"
              Rails.logger.info "-- #{block}"