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Videos

• Introduction to Functional Programming Johannes Weiß - https://vimeo.com/100786088
• ReactiveCocoa at MobiDevDay Andrew Sardone - https://vimeo.com/65637501
• The Future Of ReactiveCocoa Justin Spahr-Summers - https://www.youtube.com/watch?v=ICNjRS2X8WM
• Enemy of the State Justin Spahr-Summers - https://www.youtube.com/watch?v=7AqXBuJOJkY
• WWDC 2014 Session 229 - Advanced iOS Application Architecture and Patterns Andy Matuschak - https://developer.apple.com/videos/play/wwdc2014/229/
• Functioning as a Functionalist Andy Matuschak - https://www.youtube.com/watch?v=rJosPrqBqrA
• Controlling Complexity in Swift Andy Matuschak - https://realm.io/news/andy-matuschak-controlling-complexity/

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Xcode 6

1. Plug in the device and open Xcode
2. Choose Window -> Devices from the Xcode menu
3. Under the DEVICES section in the left column, choose the device
4. To see crash logs, select the View Device Logs button under the Device Information section on the right hand panel
5. Find your app in the Process column and select the Crash log to see the contents.
6. IMPORTANT Be sure to symbolicate your crash report.
7. Export the symbolicated crash report.

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#!/usr/sbin/dtrace -s

/* Run like:
% sudo csh
# ./spy.d $PROCESS_ID [$INTERESTING_PROBEPROV]

Prints a line of dashes every 5 seconds to delineate different experiments.
*/

#pragma D option quiet

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@interface MyView : UIView
- (void)kissMyAss;
@end

@interface _MyViewIOS6 : MyView
@end

@interface _MyViewIOS7 : MyView
@end

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{% capture the_collection %}{{page.collection}}{% endcapture %}
  {% if page.collection %}
    {% assign  document = site[the_collection]  %}
  {% endif %}
<h1>TITLE: {{ page.title }}</h1>
{% for links in document  %}
  {% if links.title == page.title %}
    {% unless forloop.first %}
      {% assign prevurl = prev.url %}
    {% endunless %}

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Types

A type is a collection of possible values. An integer can have values 0, 1, 2, 3, etc.; a boolean can have values true and false. We can imagine any type we like: for example, a HighFive type that allows the values "hi" or 5, but nothing else. It's not a string and it's not an integer; it's its own, separate type.

Statically typed languages constrain variables' types: the programming language might know, for example, that x is an Integer. In that case, the programmer isn't allowed to say x = true; that would be an invalid program. The compiler will refuse to compile it, so we can't even run it.

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#!/bin/sh

command="${*}"
printf "Initialized REPL for [%s]\n" "$command"
printf "%s> " "$command"
read -r input
while [ "$input" != "" ];
do
    eval "$command $input"
    printf "\n%s> " "$command"

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Transforming Code into Beautiful, Idiomatic Python

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides.

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Looping over a range of numbers

for i in [0, 1, 2, 3, 4, 5]:

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#System Design Interview Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

##Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

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Project Name

TODO: Write a project description

Installation

TODO: Describe the installation process

Usage