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package main

import (
	"fmt"
	"sync"
)

type Fetcher interface {
	// Fetch returns the body of URL and
	// a slice of URLs found on that page.

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void validateConnection(KeeperState sate, bool fromCodeToState) {

  ...

  else if (state == Watcher.Event.KeeperState.Expired)
  {
    if (fromCodeToState && client.isConnected())
       // ignore
    else 
       // fire a LOST as it is now       

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Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

• They are the people who get things done. Effective Engineers produce results.

Adopt the Right Mindsets

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• A Deeper Understanding of Spark Internals
• Spark Runtime Internals (By LianCheng)
• Spark Runtime Internal (By Zhu Nan)
• Spark Interals (Code reading Guide)
• Spark Internals Git book

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Facebook related

解System Design题是个交流的过程，或者说是给出方案然后获取反馈的不断循环的过程。 一般的流程： 首先你要问清楚requirement； 然后可以讲一下high level architecture，就是分成哪几个component，互相之间如果 interact，在白板上画一画； 之后面试官可能会让你深入某个component detail讨论； 也有可能变换requirement让你重新设计

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Top 5 HN posts about SICP

• So you want to do the SICP...
• SICP is Under Attack
• Easing into SICP
• Poll: Have you read SICP?
• Why and How to Start Your SICP Trek

Courses Using SICP

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Scala Stream

[Scala Stream Hygiene I: Avoiding Memory Leaks] (http://blog.dmitryleskov.com/programming/scala/stream-hygiene-i-avoiding-memory-leaks/)

[Scala Stream Hygiene II: HotSpot Kicks In] (http://blog.dmitryleskov.com/programming/scala/stream-hygiene-ii-hotspot-kicks-in/)

[Scala Stream Hygiene III: Scalaz EphemeralStream Fills Quite A Canyon] (http://blog.dmitryleskov.com/programming/scala/stream-hygiene-iii-scalaz-ephemeralstream-fills-quite-a-canyon/)

Package Object

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Scala AST

https://github.com/wolfe-pack/wolfe/wiki/Scala-AST-reference

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Existential types in Scala

http://www.drmaciver.com/2008/03/existential-types-in-scala/

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Binary Search

Search Insert Position: 1 CE, 1 TLE, 1 AC

Search for a Range: 1 CE, 1 WA, 1 AC, 1 AC (binary search twice)

Search in Rotated Sorted Array: 3 WA, 1 AC

Search in Rotated Sorted Array II: 2 WA, 1 TLE, 2 WA, 1 AC (sequencial search), 1 AC