michaelavila

Lens

Control.Lens helps you to get, set, and modify the particulars of your data. The ideas behind lens are interesting for a number of reasons, not the least of which is composability. Because of this, Simon Peyton Jones titled his talk on lens "Compositional Data Access and Manipulation", which is a great title. You should watch that talk.

The agenda is:

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Applicative functors

Why is Applicative Functor needed?

To understand the need for applicative, try to write an implementation of the following:

fmap2 :: Functor f => (a -> b -> c) -> (f a -> f b -> f c)

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//: Playground - noun: a place where people can play

import UIKit

typealias Properties = Dictionary<String,Any?>


struct TypeKey {
    let type: Any.Type
}

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let base16colorspace=256
colorscheme base16-default-dark
let shellbg=$SHELLBG
if shellbg == 'dark'
  set background=dark
  highlight LineNr ctermfg=blue ctermbg=black
else
  set background=light
  highlight LineNr ctermfg=blue ctermbg=white
endif

michaelavila

1. brew install grc
2. add alias mvn='grc -c conf.mvn mvn' to your ~/.profile
3. copy the other file in this gist to ~/.grc/conf.mvn

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Put the contents of the files in this gist in $HOME/.grc/ in their respective files.

michaelavila

package com.michaelavila;

import java.util.Optional;
import java.util.function.Function;

class Either<A,B> {
    private A left = null;
    private B right = null;

    private Either(A a, B b) {

michaelavila

package com.michaelavila;

import java.util.Optional;
import java.util.function.Function;

/**
 * Created by michaelavila on 7/30/15.
 */
public class FunctionalExamples {
    public static void main(String[] args) {

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#!/usr/bin/env sh
DOTVERSION=0.0.1

function dot() {
  (( $# )) || (echo "No arguments provided." && dot-usage)

  # check for version, and help
  for arg in "$@"
  do
    case $arg in

michaelavila

language: objective-c
osx_image: xcode61
script:
  - xctool test -project Project.xcodeproj -scheme Project -sdk iphonesimulator