Zhentiw - 博客园

2018年1月22日

[React] Optimistic UI update in React using setState()

摘要： In this lesson we will refactor an existing UI update from a typical loading approach to an optimistic UI updateapproach to give our users a faster, m 阅读全文

posted @ 2018-01-22 17:48 Zhentiw 阅读(271) 评论(0) 推荐(0)

[Javascript] Required function arguments in Javascript

摘要： In Javascript, all function arguments are optional by default. That means if you ever forget to pass a critical parameter, the code will just fail wit 阅读全文

posted @ 2018-01-22 17:35 Zhentiw 阅读(279) 评论(0) 推荐(0)

2018年1月17日

[Transducer] Lazyness in Transduer

摘要： Transducers remove the requirement of being lazy to optimize for things like take(10). However, it can still be useful to "bind" a collection to a set 阅读全文

posted @ 2018-01-17 21:44 Zhentiw 阅读(220) 评论(0) 推荐(0)

[Transducer] Create a Sequence Helper to Transduce Without Changing Collection Types

摘要： A frequent use case when transducing is to apply a transformation to items without changing the type of the collection. In this lesson, we'll create a 阅读全文

posted @ 2018-01-17 20:52 Zhentiw 阅读(232) 评论(0) 推荐(0)

[Transducer] Make an Into Helper to Remove Boilerplate and Simplify our Transduce API

摘要： Our transduce function is powerful but requires a lot of boilerplate. It would be nice if we had a way to transduce into arrays and objects without ha 阅读全文

posted @ 2018-01-17 20:24 Zhentiw 阅读(174) 评论(0) 推荐(0)

[ML] Daily Portfolio Statistics

摘要： Let's you have $10000, and you inverst 4 stocks. ['SPY', 'IBM', 'XOM', 'GOOG']. The allocation is [0.4, 0.4, 0.1, 0.1] separately. The way to calculat 阅读全文

posted @ 2018-01-17 20:02 Zhentiw 阅读(325) 评论(0) 推荐(0)

2018年1月16日

[Javascript] Transduce over any Iteratable Collection

摘要： So far we've been transducing by manually calling .reduce() on arrays, but we want to be able to transduce over other collection types as well. In thi 阅读全文

posted @ 2018-01-16 20:23 Zhentiw 阅读(238) 评论(0) 推荐(0)

[Javascript] Improve Composition with the Compose Combinator

摘要： To make our composition more readable and easier to name we are going to ceate a compose function we can use to avoid having to manually nest our tran 阅读全文

posted @ 2018-01-16 17:44 Zhentiw 阅读(207) 评论(0) 推荐(0)

2018年1月15日

[Mobx] Using mobx to isolate a React component state

摘要： React is great for diffing between Virtual-DOM and rendering it to the dom. It also offers a naïve solution for diffing state in terms of setState. Ho 阅读全文

posted @ 2018-01-15 01:25 Zhentiw 阅读(267) 评论(0) 推荐(0)

[Javascript] Simplify Creating Immutable Data Trees With Immer

摘要： Immer is a tiny library that makes it possible to work with immutable data in JavaScript in a much more straight-forward way by operating on a tempora 阅读全文

posted @ 2018-01-15 01:16 Zhentiw 阅读(274) 评论(0) 推荐(0)

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