bvaughn

React lifecycle cheatsheet

Method	Side effects1	State updates2	Example uses
Mounting
componentWillMount		✓	Constructor equivalent for createClass
render			Create and return element(s)
componentDidMount	✓	✓	DOM manipulations, network requests, etc.
Updating
componentWillReceiveProps		✓	Update state based on changed props

blendmaster

import java.util.concurrent.atomic.AtomicReference;
import java.util.function.*;

/**
 * Fancy Lenses Like The Ones In Haskell
 */
class FancyLenses {

    // You've got yourself some fine immutable JavaBeans™, and you're cool with that.

mathieuancelin

package bar.foo.lenses;

import java.util.function.BiFunction;
import java.util.function.Function;

public class Lens<A, B> {

    private final Function<A, B> getter;
    private final BiFunction<A, B, A> setter;