Zhentiw - 博客园

2018年5月14日

[Javascript Crocks] Recover from a Nothing with the `coalesce` Method

摘要： The alt method allows us to recover from a nothing with a default Maybe, but sometimes our recovery efforts might need to enlist some logic to recover 阅读全文

posted @ 2018-05-14 18:54 Zhentiw 阅读(377) 评论(0) 推荐(0)

[Javascript Crocks] Recover from a Nothing with the `alt` method

摘要： Once we’re using Maybes throughout our code, it stands to reason that at some point we’ll get a Maybe and want to continue applying transformations. W 阅读全文

posted @ 2018-05-14 17:54 Zhentiw 阅读(383) 评论(0) 推荐(0)

2018年5月13日

[React] Update Application State with React Apollo ApolloConsumer Component

摘要： In this lesson I refactor some code that utilizes the Mutation component to update client-side cache to use the new ApolloConsumer component baked int 阅读全文

posted @ 2018-05-13 01:46 Zhentiw 阅读(399) 评论(0) 推荐(0)

2018年5月11日

[Javascript Crocks] Flatten Nested Maybes with `chain`

摘要： Sometimes, we run into situations where we end up with a Maybe within the context of another Maybe. Nested structures like this can get really confusi 阅读全文

posted @ 2018-05-11 20:36 Zhentiw 阅读(523) 评论(0) 推荐(0)

[Javascript Crocks] Safely Access Nested Object Properties with `propPath`

摘要： In this lesson, we’ll look at the propPath utility function. We’ll ask for a property multiple levels deep in an object and get back a Maybe. We’ll ge 阅读全文

posted @ 2018-05-11 20:18 Zhentiw 阅读(218) 评论(0) 推荐(0)

[Javascript Crocks] Safely Access Object Properties with `prop`

摘要： In this lesson, we’ll use a Maybe to safely operate on properties of an object that could be undefined. We’ll use our initial code as the basis for a 阅读全文

posted @ 2018-05-11 19:34 Zhentiw 阅读(228) 评论(0) 推荐(0)

[Javascript Crocks] Create a Maybe with a `safe` Utility Function

摘要： In this lesson, we’ll create a safe function that gives us a flexible way to create Maybes based on a value and a predicate function that we supply. W 阅读全文

posted @ 2018-05-11 19:04 Zhentiw 阅读(203) 评论(0) 推荐(0)

[Javascript Crocks] Understand the Maybe Data Type

摘要： In this lesson, we’ll get started with the Maybe type. We’ll look at the underlying Just and Nothing types and create a simple utility function to cre 阅读全文

posted @ 2018-05-11 03:15 Zhentiw 阅读(210) 评论(0) 推荐(0)

2018年5月8日

[Javascript] IntersectionObserver -- Lazy Load Images on a Website

摘要： When it comes to websites performance is king. How long it takes for a page to load can mean the difference of millions of dollars for large ecommerce 阅读全文

posted @ 2018-05-08 20:27 Zhentiw 阅读(326) 评论(0) 推荐(0)

[React] Capture values using the lifecycle hook getSnapshotBeforeUpdate in React 16.3

摘要： getSnapshotBeforeUpdate is a lifecycle hook that was introduced with React 16.3. It is invoked right before the most recently rendered output is commi 阅读全文

posted @ 2018-05-08 19:24 Zhentiw 阅读(280) 评论(0) 推荐(0)

Answer1215

公告