rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

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

What's an Effective Engineer?

jbeda

# This tells kubecfg to read its config from the local directory
export KUBECONFIG=./kubeconfig

# Looking at the cluster
kubectl get nodes
kubectl get pods --namespace=kube-system

# Running a single pod
kubectl run --generator=run-pod/v1 --image=gcr.io/kuar-demo/kuard-amd64:1 kuard
kubectl get pods

hk-skit

// Remove Duplicates from an array
const removeDuplicates =
  arr => arr.filter((item, index) => index === arr.indexOf(item));

const removeDuplicates1 = array => [...new Set(array)];

const removeDuplicates2 = array => Array.from(new Set(array));


// Flattens an array(doesn't flatten deeply).

Avinash-Bhat

<application>
  <component name="RainbowSettings">
    <option name="rainbowifyHTMLInsideJS" value="true" />
    <option name="version" value="5.1" />
    <option name="lightRoundBracketsColors">
      <array>
        <option value="0x263238" />
        <option value="0x455a64" />
        <option value="0x607d8b" />
        <option value="0x90a4ae" />

gaearon

If you haven’t worked with JavaScript in the last few years, these three points should give you enough knowledge to feel comfortable reading the React documentation:

• We define variables with let and const statements. For the purposes of the React documentation, you can consider them equivalent to var.
• We use the class keyword to define JavaScript classes. There are two things worth remembering about them. Firstly, unlike with objects, you don't need to put commas between class method definitions. Secondly, unlike many other languages with classes, in JavaScript the value of this in a method [depends on how it is called](https://developer.mozilla.org/en-US/docs/Web/Jav

phiresky

#!/bin/bash

fname="$1"

cachedir=/tmp/pdfextract
mkdir -p "$cachedir"

mtime="$(stat -c %Y "$1")"

hash=$(echo $fname.$mtime | sha256sum |  cut -c1-64)

peterc

1963 - JOSS (JOHNNIAC Open Shop System)
1964 - Dartmouth BASIC
1966 - CAL for Project Genie Time Sharing System
1974 - OLIVER by Kenneth Dakin
1975 - Maestro I
1980 - dBase
1980 - Smalltalk
1981 - IBM Advanced BASIC (BASICA)
1983 - IBM Logo
1983 - GW-BASIC

alexjlockwood

import android.content.Context
import android.graphics.Canvas
import android.graphics.Color
import android.graphics.Paint
import android.util.AttributeSet
import android.view.View

private const val N = 16
private const val PERIOD1 = -10000.0
private const val PERIOD2 = -500.0

davidvavra

import com.android.tools.lint.client.api.UElementHandler
import com.android.tools.lint.detector.api.*
import org.jetbrains.uast.UElement
import org.jetbrains.uast.UPostfixExpression

class NonNullAssertionDetector : Detector(), Detector.UastScanner {

    override fun getApplicableUastTypes(): List<Class<out UElement>>? {
        return listOf(UPostfixExpression::class.java)
    }

elizarov

import kotlin.coroutines.*
import kotlin.coroutines.intrinsics.*

/**
 * Defines deep recursive function that keeps its stack on the heap,
 * which allows very deep recursive computations that do not use the actual call stack.
 * To initiate a call to this deep recursive function use its [invoke] function.
 * As a rule of thumb, it should be used if recursion goes deeper than a thousand calls.
 *
 * The [DeepRecursiveFunction] takes one parameter of type [T] and returns a result of type [R].