jmont

- (id)xxx_decoder:(NSCoder *)decoder decodeObjectOfClass:(Class)class forKey:(id)key {
    id obj = [decoder decodeObjectForKey:key];
    if (![obj isKindOfClass:class]) {
        return nil;
    }
    return obj;
}

jmont

// Swift Monads -- Maybe
// Juan C. Montemayor (@norsemelon)

// This operator can be used to chain Optional types like so:
// optionalVal >>= f1 >>= f2
// where f1 and f2 have type `Any -> Any?`
//
// If a value is ever nil, the chain short-circuits and will result in nil.
// This is a much neater way to do this than using the if syntax specified in
// the Swift iBook.

jmont

// Curried Functions in Swift
// Juan C. Montemayor (@norsemelon)
// Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks. https://itun.es/us/jEUH0.l

// Syntax: func name (x1: t1)(x2: t2) -> t { ... }
// Note: it has a paren pair for every variable, as opposed to `(x1: t1, x2: t2)`
func addTwoNumbers(a: Int)(b: Int) -> Int {
    return a + b
}
 

jmont

operator infix -%- { associativity left }
func -%-<TypeA, TypeB, TypeC> (f: TypeB -> TypeC, g: TypeA -> TypeB) -> (TypeA -> TypeC) {
    return ({ x in f(g(x)) })
}

func add3(x:Int) -> Int {
    return x + 3;
}

func add7(x: Int) -> Int {

jmont

Keybase proof

I hereby claim:

• I am jmont on github.
• I am jmont (https://keybase.io/jmont) on keybase.
• I have a public key whose fingerprint is 9416 F219 A1B6 A6E5 0AA8 B371 793F 0B31 DB85 519F

To claim this, I am signing this object:

jmont

// The spread function!

Promise.resolve([thing1, thing2, thing3]).spread((thing1, thing2, thing3) => { /* Do something! */ })

// Upserting a sample Movie model

import Models from 'db/models/index'

updateMovie (movie, params) {
    return this.updateMovieObject(movie, params).spread(this.upsertTagsForMovie).spread(this.updateMovieInfo).spread((movie, params) => movie)

jmont

// The spread function!

Promise.resolve([thing1, thing2, thing3]).spread((thing1, thing2, thing3) => { /* Do something! */ })

// Upserting a sample Movie model

import Models from 'db/models/index'

updateMovie (movie, params) {
    return this.updateMovieWParams(movie, params).spread(this.upsertTagsForMovie).spread(this.updateMovieInfo).spread((movie, params) => movie)