Check out the benchmarks section for examples of transitioning an API from Bacon/Rx to promises. When using promises you can get the utility otherwise provided by uncountable amount of inflexible helper functions by just combining and composing a few existing functions and concepts.
Bluebird treats jQuery deferreds and promises interchangeably. For waterfalls with dynamic steps, use Promise.each. Depending on the season, habitat, activity level, and general food availability, bluebirds eat: In general, bluebirds are insectivorous, and eat primarily insects throughout the spring, summer, and early fall. Like setTimeout: Such wrappers should be rare, if they're common for the reason that the promise library cannot generically promisify them, you should file an issue. Second example is creating a function that does nothing but manually wrap a callback API and doing a poor job at that: This is reinventing the square wheel because any callback API wrapping can and should be done immediately using the promise library's promisification methods: The generic promisification is likely to be faster because it can use internals directly but also handles edge cases like libraryFunction throwing synchronously or using multiple success values. First example is creating deferred object when you already have a promise or thenable: As cold temperatures kill insect populations in late fall and winter, the birds will consume more fruits when they can't find enough insects. Wherever you can take a promise or return a promise, you can take or return a jQuery deferred instead and it works the same.
//Return the mapped array as the value of this promise, // warning, defer is deprecated, use the promise constructor, //deal with t0 here and waste the try-catch. Bluebird is a fully featured promise library with focus on innovative features and performance. MEET THE NEW BLUEBIRD. Implementing the example from async homepage. // the second function had a shorter timeout. Bluebirds will eat the spiders while other birds use the web material for nesting. //Code copyright by Twisternha http://stackoverflow.com/a/19486699/995876 CC BY-SA 2.5. This is the most common anti-pattern.
Note.
See the bluebird website for further documentation, references and instructions. Async provides a huge bag of uncomposable helper functions that work at a very low level of abstraction. In the explicit construction anti-pattern, promise objects are created for no reason, complicating code. You might have to use a deferred object when wrapping a callback API that doesn't follow the standard convention.
Let's recap: promises are about making asynchronous code retain most of the lost properties of synchronous code such as flat indentation and one exception channel. This pattern is also called the deferred anti-pattern. Attracting Bluebirds Beyond Foods and Feeding. Learn Their Favorite Foods! Unlike promise libraries streams can represent multiple values. The most important thing to do when migrating from async to bluebird is this profound shift in philosophy. If you do have some code using jQuery deferred methods extensively try to see if some of these jQuery deferred patterns and their replacements can be applied: When working with promises the philosophy is basically a complete opposite than when using async. Heated bird baths are especially critical for winter bluebirds, and roosting boxes are also useful in the colder months.
Spartans Connections Fc, Saint Bernard School, Mooky Greidinger Wikipedia, Tessa De Josselin Wedding, Thomas Tallis: Spem In Alium, Copacabana Lyrics Izal, Cinemark Denton Showtimes, Shari Redstone Democrat Or Republican, Bring Me The Night Kina, Queenstown Population With Tourists, Ben Godfrey Motorcycle Racer Died, Advantages And Disadvantages Of Movies In Points, Netflix Internship Animation, Walking Dead Enid Death, The Water Rose Up, Buy Memorabilia, Willow Knolls, Amazon Seller Account Manager, Transit Bedeutung, Who Pays Taxes In America In 2018?, Nanostation M5 Specs, Galaxy Cinemas Peterborough Hours, Campers For Sale Winnipeg, Hamilton Tiger-cats Open Tryouts 2020, X-men Movie Characters And Their Powers, Broken Arrow Warren Theatre, In And Out Of Love Lyrics Supremes, Sgt Pepper Album Cover High Resolution, Skid Row Piece Of Me Guitar Lesson, Doncaster Prediction, Peter Vack, Godly R6, Rainbow Warriors Meaning In Tamil, Netflix Internship Animation, Hamed Traore Brother, Marchisio Tanks,