nicokosi

Docker nightclazz découverte

05/02/2015 par Mario Loriedo & Vincent Demeester

C'est une intro, prochaine session dans 1 mois

Intro

• outil pour partager env de dev et env de prod (sysadmin) #devops: "build, ship and run" via conteneurs => + rapide, automatisation

nicokosi

// array
var myArray = [1, 2, 3];

// set
var mySet = { "foo": true, "bar": true, "baz": true };
set.foo // true
set.notExists // false


var object = { id: 126878, name: "ZALTRAP 25 mg/ml sol diluer p perf", sid: "vidal://product/126878", title: "ZALTRAP 25 mg/ml sol diluer p perf" };

nicokosi

Part 3

Introduction to Ruby {

	Our focus {
		Pure Object-Oriented
			no primitives (even numbers)

		Class-based
			Every object has a class that determines behavior (like Java)

nicokosi

( Introduction to Racket:

	Racket:
		- functional focus
		- with imperative features
		- dynamically-types
		- minimalist syntax
		- advanced features: modules, macros, etc...

	(note: we will not use pattern matching, but it exists)

nicokosi

Programming languages

(* Emacs tips :
  open file: ctr-c ctr-f
  copy: M-w, paste: ctr+y
  save file: ctr+x ctr+s,
  next/previous buffer: ctr+x left/right:
  start REPL: ctr+c ctr+s sml, stop REPL: ctr+c ctr+d 
  stop command interpreter: ctr-g 
  split window vertically: C-x 2

nicokosi

-- http://learnyouahaskell.com

-- Starting out

-----------------------------------------------------------------------------------
-- baby's first functions http://learnyouahaskell.com/starting-out#babys-first-functions
doubleMe x = x + x 
doubleUs x y = doubleMe x + doubleMe y
doubleSmallNumber x = if x > 100  
                        then x  

nicokosi

### BRANCHES
git checkout -b <branch name> # Create a branch
git branch -r # List remote branches
git checkout <branch name> # Switch to branch (deprecated)
git switch <branch name> # Switch to branch
git checkout <commit ID> # Locally retrieve an old revision
git fetch # retrieve remote changes (commits) without changing local repo ; can be used to fix sync issue
git branch -D branchName # delete local branch
git branch -m <newname> # rename current local branch
git push origin --delete <branchName> # delete remote branch

nicokosi

Notes from Coursera course 'Functional Programming Principles in Scala":
https://class.coursera.org/progfun-004

✔ Week 1: Functions & Evaluations @done (14-05-01 17:20)

    ✔ Lecture 1.1 - Programming Paradigms (14:32) @done (14-04-27 17:54)

        3 paradigms: imperative, functional, logic
        OO: orthogonal
        imperative:

nicokosi

Varnish

Intro

• "HTTP reverse proxy" => server-side HTTP cache => HTTP accelerator

client 1    --- GET foo --->    Varnish    --- GET foo --->    web app    (cache miss)
client 2    --- GET foo --->    Varnish    (cache hit)

• Linux-only, OSS, *nix philosophy (command tools)

nicokosi

# R code that generates graph for collinear detection, week 3 assigment from Coursera MOOC "Algoritms, part I" (https://www.coursera.org/course/algs4partI). N.B.: input CSV file contains this kind of data: "n,time,algo\n10,0.497,brute\n10,0.006,fast\n# etc...".

library(ggplot2)

d <- read.csv("collinear-timings-brute-vs-fast.csv")

d$algo <- factor(d$algo)
levels(d$algo)[levels(d$algo)=="brute"] <- "Brute force"
levels(d$algo)[levels(d$algo)=="fast"] <- "Fast"