Slide deck from the 15 March bootcamp held at Victoria University

1. CODE BOOTCAMPS
Making the most of
Roger Nesbitt
@mogest
SUMMER OF TECH 2016

2. #general
sot2016.slack.com

3. What’s this about?

4. You have knowledge.
You have passion.
How do you get a job?

5. Myth busting
Language overview
Developer roles
Winning at bootcamps
TONIGHT

6. Myth busting
Language overview
Developer roles
Winning at bootcamps
NEXT

7. 1. I know where I’m going with my career
2. I’m competent in the relevant programming language
3. I’ve achieved a relevant qualification
4. I’ve achieved good grades
5. I’m strongly opinionated about “good” and “bad” code
6. I can communicate an idea clearly
7. I can learn new concepts
8. I can work well in a team
9. I can independently write amazing code

8. MYTH #5
University prepares you for your working career

9. MYTH #4
I need to specialise now to get a good job

10. MYTH #3
I’m an 8/10 in Java

11. ByPeterCampbell-self-made,NikonD80,GFDL,https://
commons.wikimedia.org/w/index.php?curid=3672205

12. You’re probably 2/10.
That’s OK!

13. MYTH #2
Front-end dev is easy
Back-end dev is hard

14. MYTH #1
Being a good coder means
being good at a programming language

15. • Accurately transform real-world ideas
and constraints into a language a
computer can understand
• Factor code to be highly readable and
maintainable so changes can be easily
made and bugs easily located

16. I can work well in a team
I can learn new concepts
I can communicate an idea clearly
I’ve achieved good grades
I can independently write amazing code
I’m competent in the relevant programming language
I’ve achieved a relevant qualification
I’m strongly opinionated about “good” and “bad” code
I know where I’m going with my career

17. Employers hire students for
POTENTIAL
not
KNOWLEDGE

18. Myth busting
Language overview
Developer roles
Winning at bootcamps
NEXT

19. https://www.flickr.com/photos/mrbill/148973427

20. https://www.flickr.com/photos/gsi-r/5059484398

22. $ ./number-to-words 786637
punner
rummer
runner
stoner
summer
sumner

23. moge.st/phone

24. Ruby
❤

25. number = ARGV.first
alphabet = ('a'..'z').to_a.join
numbers = "22233344455566677778889999"
puts IO.read("/usr/share/dict/words")
.downcase
.split
.select { |word| word.tr(alphabet, numbers) == number }

26. Python

27. # Written by Nick Johnstone (@widdnz)
import sys
import string
NUMBER = sys.argv[1]
ALPHABET = string.ascii_lowercase
NUMBERS = '22233344455566677778889999'
WORD_LIST_PATH = '/usr/share/dict/words'
WORD_TO_NUMBER = str.maketrans(ALPHABET, NUMBERS)
def words_matching_phone_number(word_list, number):
def matches_number(word):
return word.translate(WORD_TO_NUMBER) == number
words_lower_and_stripped = (word.lower().strip() for word in word_list)
return (word for word in words_lower_and_stripped if matches_number(word))
with open(WORD_LIST_PATH, 'r') as word_list:
print('n'.join(words_matching_phone_number(word_list, NUMBER)))

28. Javascript

29. function dictionaryLoaded(err, data) {
if (err) {
return console.log(err);
}
var number = process.argv[2];
var words = data.toLowerCase().split("n");
var matches = findMatchingNumbers(
number, words
);
console.log(matches);
}
function wordToNumber(word) {
return word
.replace(/[a-c]/g, '2')
.replace(/[d-f]/g, '3')
.replace(/[g-i]/g, '4')
.replace(/[j-l]/g, '5')
.replace(/[m-o]/g, '6')
.replace(/[p-s]/g, '7')
.replace(/[t-v]/g, '8')
.replace(/[w-z]/g, '9');
}
function findMatchingNumbers(targetNumber, words)
{
return words.filter(function(word) {
return wordToNumber(word) === targetNumber;
});
}
var fs = require("fs");
fs.readFile(
"/usr/share/dict/words",
"utf8",
dictionaryLoaded
);

30. Swift

31. // Written by the Powershop mobile dev team
import Foundation
func loadDictionary() throws -> [String] {
do {
let path = "/usr/share/dict/words"
let fileContents = try NSString(
contentsOfFile: path,
encoding: NSUTF8StringEncoding)
words = fileContents
.lowercaseString
.componentsSeparatedByString("n")
return words
}
}
func wordToNumber(word: String) -> String {
let letters: [String] =
Array("abcdefghijklmnopqrstuvwxyz".characters)
let numbers: [Int] = [2, 2, 2, 3, 3, 3, 4, 4, 4, 5,
5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9]
for i in 0..<letters.count {
word = word
.stringByReplacingOccurrencesOfString(
letters[i], withString: String(numbers[i]))
}
return word
}
func findMatchingNumbers(
targetNumber: String, words: [String]) -> [String] {
filteredWords = words.filter { (word) -> Bool in
let number = wordToNumber(word)
return number == targetNumber
}
return filteredWords
}
if let number = Process.arguments.first {
do {
let words = try loadDictionary()
let matches = findMatchingNumbers(number, words)
for word in matches {
print(word)
}
} catch {
print("An error occurred loading the dictionary.")
}
}

32. PHP

33. <?php
$number = $argv[1];
$data = file_get_contents("/usr/share/dict/words");
$words = explode("n", strtolower($data));
$alphabet = range('a', 'z');
$numbers = array(2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 9);
function wordToNumber($word) {
global $alphabet, $numbers;
return str_replace($alphabet, $numbers, $word);
}
function wordMatchesNumber($word) {
global $number;
return $number == wordToNumber($word);
}
$matchingWords = array_filter($words, "wordMatchesNumber");
foreach ($matchingWords as $word) {
echo "$wordn";
}
?>

34. C#

35. using System;
using System.IO;
using System.Text;
using System.Linq;
class PhoneNumberToWords
{
public string Number;
public string[] Words;
const string LetterMapping =
"22233344455566677778889999";
public PhoneNumberToWords(string number,
string dictionaryFile)
{
Number = number;
Words =
System.IO.File.ReadAllLines(dictionaryFile);
}
public void OutputMatchingWords()
{
Words.Where(word => WordMatchesNumber(word))
.ToList()
.ForEach(word => Console.WriteLine(word));
}
private bool WordMatchesNumber(string word)
{
return WordToNumber(word) == Number;
}
private string WordToNumber(string word)
{
StringBuilder builder = new StringBuilder("");
foreach (char c in word.ToUpper())
{
if (c >= 65 && c < 65 + 26)
{
builder.Append(LetterMapping[c - 65]);
}
else
{
builder.Append(c);
}
}
return builder.ToString();
}
static void Main(string[] args)
{
String number = args[0];
new PhoneNumberToWords(
number,
"/usr/share/dict/words"
).OutputMatchingWords();
}
}

36. C

37. #include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
char *read_file(void)
{
int fd;
struct stat stat;
char *words;
fd = open("/usr/share/dict/words", O_RDONLY);
if (fd == -1) { return NULL; }
if (fstat(fd, &stat) == -1) { return NULL; }
words = (char *)malloc(stat.st_size + 1);
if (words == NULL) { return NULL; }
if (read(fd, words, stat.st_size) != stat.st_size) {
return NULL;
}
close(fd);
words[stat.st_size] = 0;
return words;
}
int main(int argc, char *argv[])
{
const char *numbers = "22233344455566677778889999";
char *words, *word_ptr, *start_word_ptr;
char *number, *number_ptr;
int letter_index;
if (argc != 2) { return 1; }
number = argv[1];
words = read_file();
if (words == NULL) { return 1; }
word_ptr = words;
start_word_ptr = words;
number_ptr = number;
while (*word_ptr) {
letter_index = toupper(*word_ptr) - 65;
if (letter_index >= 0 && letter_index < 26 &&
numbers[letter_index] == *number_ptr) {
number_ptr++;
word_ptr++;
if (*number_ptr == 0 && *word_ptr == 'n') {
*word_ptr = 0;
puts(start_word_ptr);
start_word_ptr = ++word_ptr;
number_ptr = number;
}
}
else {
while (*word_ptr != 'n') { word_ptr++; }
start_word_ptr = ++word_ptr;
number_ptr = number;
}
}
free(words);
return 0;
}

38. Myth busting
Language overview
Developer roles
Winning at bootcamps
NEXT

39. Web Developer
Front-end Developer
Software Developer
Software Engineer
Mobile Developer
Devops Engineer

40. WARNING!
Every organisation is wildly different.
Every job is wildly different.
The following is just a guideline!

41. Javascript
10%
HTML/CSS
35%
Server coding
15%
WEB DEVELOPER
• Shipping content-based websites
• Generally small contracts
• Often uses a platform
(Drupal, Wordpress, SilverStripe)
• 45% HTML, CSS, Javascript
• 15% back-end coding (PHP?)
• Some design skills a plus

42. WEB DEVELOPER
Code management 101 22 March
CSS 101 7 April
Javascript 101 14 April
PHP 26 July
Database 101 5 April

43. Javascript
40%
HTML/CSS
20%
FRONT-END DEVELOPER
• Excellent user experience
• Probably web
• Working with back-end devs
• Javascript for consuming APIs
• … or views of a monolithic app
in C#, Ruby, Python
• Technology immature compared
to back-end == challenging

44. FRONT-END DEVELOPER
Code mgmt 101 22 March
Javascript 101 14 April
JS masterclass 10 May
Testing 101 31 March
CSS 101 7 April
Testing masterclass 3 May
Devops 101 12 April
TDD 5 May

45. Database
10%
Javascript
10%
HTML/CSS
10%
Server coding
30%
SOFTWARE DEVELOPER
ALSO KNOWN AS SOFTWARE ENGINEER
• Translating business logic
• Sometimes UX too
• Web / desktop / server
• Web tech 0 – 30%
• Database complexity
• Working with designers or
front-end developers

46. SOFTWARE DEVELOPER
Code mgmt 101 22 March
Javascript 101 14 April
Database 101 5 April
Testing 101 31 March
.NET 12 May
Ruby 23 May
CSS 101 7 April
JS masterclass 10 May
Testing masterclass 3 May
TDD 5 May
Devops 101 12 April
Devops masterclass 19 May

47. Native code
60%
MOBILE DEVELOPER
NATIVE
• Excellent user experience
• Objective C / Swift or Java
• Standalone (rare)
• Integrated: working with
software developers to build
and consume their API
• Working with designers

48. ???
60%
MOBILE DEVELOPER
CROSS-PLATFORM
• Javascript (React Native,
Cordova / Phonegap)
• C# (Xamarin)
• Need to know native code too

49. MOBILE DEVELOPER
Code mgmt 101 22 March
Testing 101 31 March
Android masterclass 19 July
iOS masterclass 21 July
Javascript 101 14 April
Testing masterclass 3 May
Database 101 5 April
TDD 5 May

50. Shell
15%
Scripting
45%
DEVOPS ENGINEER
• Supporting the delivery team
• Automated server setup
• Automated deploys
• Monitoring production
• Build/QA environments
• Database tuning
• Productivity tools for the devs

51. DEVOPS ENGINEER
Devops 101 12 April
Devops masterclass 19 May
Code mgmt 101 22 March
Testing 101 31 March
Ruby 23 May
Database 101 5 April
Git masterclass 21 April

52. • Listening to, sharing and debating ideas
• Code review
• Automated tests
• Meeting with stakeholders and your team
• Teaching others what you know
• Standup, retro, sprint planning, backlog grooming, …
EVERY DEVELOPER JOB
THE MISSING 40%

54. Myth busting
Language overview
Developer roles
Winning at bootcamps
NEXT

55. WHY, SUMMER OF TECH?
WHY???

60. BywetwebworkfromLondon,UK-CampingEquipment
UploadedbyPartyzan_XXI,CCBY-SA2.0,https://
commons.wikimedia.org/w/index.php?curid=8183312

61. PREPARE
• Check the resources page
https://recruit.summeroftech.co.nz/resources
• Install any required packages the day before
• Start it up and make sure it goes
• Ask on Slack if you’re having trouble

62. GO
• Attend as many as you can
• 101 bootcamps are inspirational
• Go to masterclasses if you have 101 knowledge
• Prioritise broad over deep

63. DURING
• Participate in Slack backchannel
• Write down three things you want to take away
• Chat with the presenter afterwards

65. AFTER
• Review the “three things” two days later
• … and two weeks later
• Explore what you’ve learned
• Ask questions on Slack
• Amazeballs: teach someone what you learned

67. BUSTED
University prepares you for your working career
I need to specialise now to get a good job
I’m an 8/10 in Java
Front-end dev is easy, back-end dev is hard
Good coder == good at a programming language

68. LANGUAGES
They’re different, but not so different

69. Web Developer
Front-end Developer
Software Developer
Software Engineer
Mobile Developer
Devops Engineer

71. ENJOY!

72. Roger Nesbitt
@mogest
THANKS!