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

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

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

michaelavila

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

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

import UIKit

typealias Properties = Dictionary<String,Any?>


struct TypeKey {
    let type: Any.Type
}

michaelavila

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)

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: