faif

@startuml
hide footbox
title Bank transaction
actor Alice

Alice -> ATM: login(pin: int): boolean
ATM -> Alice: true
Alice -> ATM: deposit(amount: int): boolean
ATM -> BankAccount: deposit(amount: int): boolean
BankAccount -> ATM: true

faif

try
{
  // a CorruptFileError happens here..
}
catch (const std::exception& e)
{
  // not caught when CorruptFileError is not a subclass of std::exception
}

faif

FROM alpine

COPY versions /tmp
RUN export PRODUCT_B_VERSION="$(grep product_b /tmp/versions | cut -d= -f2)" && \
    printf "product b version is ${PRODUCT_B_VERSION}\n"

faif

from pir import *
import time
import logging

PIR_PIN = 23
SLEEP_TIME = 5  # in seconds                                                                                                                                               

def main():
    pir = PassiveInfraredSensor(PIR_PIN)
    logger = configure_logger()

faif

import machine
import time
from umqtt import MQTTClient
from network import WLAN


main()


def main():

faif

REST filter using curl

• curl -g -X GET --header "Accept: application/json" http://localhost:3000/api/CoffeeShops?filter[where][city]=Amsterdam
• curl -g -X GET --header "Accept: application/json" http://localhost:3000/api/CoffeeShops?filter[where][id]=2
• curl -g -X GET --header "Accept: application/json" http://localhost:3000/api/CoffeeShops?filter[where][city]=Eindhoven&filter[limit]=1

REST filter using the explorer

• {"where":{"id":2}}
• {"where":{"city":"Eindhoven"}}

faif

Names

• Communicate intent (no need for extra comments)

public class ParsedRequest {
}

• Keep them up-to-date
• Easy to pronounce
• No encodings (hungarian notation, etc.) public interface IRequest {}

faif

/* Exploring core Swift
 * Code excerpts: Various authors of PragPub (http://theprosegarden.com)
 *                https://www.objc.io/blog/archive/
 * XCode version used: 7.3
 */

import UIKit

/* --------------------------functions-------------------------------- */
func fact(n: Int) -> Int {

faif

import os
import requests
from bs4 import BeautifulSoup

"""Download photos from the public Flickr stream"""


def main():
    keyword = read_keyword()
    create_destination_dir(keyword)

faif

'''variables'''

# assign to int
x = 5
x
type(x)

# assign to string
x = "foo"
x