roberto

const setJackson = R.pipe(
  R.prop("users"),
  R.map(
    (user) =>
      R.startsWith('J', user.name)
        ? {...user, name: R.concat(user.name, ' Jackson')}
        : user
  )
)

roberto

R.pipe(
  R.prop("users"),
  R.sortBy(R.prop("age")),
  R.take(3),
  R.pluck("name")
)

roberto

const isOld = R.gt(R.__, 33)

const getOldPeople = R.pipe(
  R.prop("users"),
  R.filter(R.where({age: isOld}))
)

const getOldPeople = R.pipe(
  R.prop("users"),
  R.filter(R.propSatisfies(isOld, 'age'))

roberto

const myProp = (key, maybeObject) => {
  if (maybeObject === undefined) {
    return (object) => {
      return myProp(key, object)
    }
  }

  return maybeObject[key]
}

roberto

const increment = (key, obj) => {
  return {
    ...obj,
    [key]: obj[key] + 1
  }
}

roberto

import Html exposing (text)

partition n =
  break (n - 1, 0)
  
break (n, total) =
  case n of
    1 -> total + 1
    n -> 1 + break(n - 1, total + 1)

roberto

10 weird tricks that React developers near you are using to create reusable components

https://www.youtube.com/watch?v=nQo0EdHNjto

• reusable components
  • props over state
    • prop === state => problem!
  • stateless components
  • easy to unit test
• PropTypes are serious

roberto

Blazing fast:

emacs --daemon
emacsclient .

inside terminal:

emacsclient -nw .

roberto

var schema = joi.object().keys({
  things: joi.array().items(
    joi.object().keys({
      id: joi.string(),
      name: joi.string(),
      version: joi.string()
    })
  )
});

roberto

package main

import (
	"bytes"
	"flag"
	"fmt"
	"github.com/elazarl/goproxy"
	"github.com/robertkrimen/otto"
	"io"
	"io/ioutil"