Zhentiw - 博客园

2016年10月12日

[Angular 2] BYPASSING PROVIDERS IN ANGULAR 2

摘要： Artical --> BYPASSING PROVIDERS IN ANGULAR 2 Here trying to solve one problem: On the left hand side of tree, there are 4 green blocks and 1 blue bloc 阅读全文

posted @ 2016-10-12 03:15 Zhentiw 阅读(520) 评论(0) 推荐(0)

[AngularFire 2] Joins in Firebase

摘要： Lets see how to query Firebase. First thing, when we do query, 'index' will always help, for both SQL and NoSQL. In Firebase, we can also set index on 阅读全文

posted @ 2016-10-12 03:05 Zhentiw 阅读(469) 评论(0) 推荐(0)

2016年10月10日

[Ramda] Getter and Setter in Ramda & lens

摘要： Getter on Object: 1. prop: 2. props: Setter ob Object: Another way to use Lens: 阅读全文

posted @ 2016-10-10 21:12 Zhentiw 阅读(417) 评论(0) 推荐(0)

[Angular2 Router] Index router

摘要： Index router as default router. Index router, usually comes as last, just right before the fallback router. 阅读全文

posted @ 2016-10-10 16:27 Zhentiw 阅读(346) 评论(0) 推荐(0)

[TypeScript] Using Interfaces to Describe Types in TypeScript

摘要： It’s easy to pass the wrong value to a function. Typescript interfaces are great because they catch errors at compile time or in an IDE. In this lesso 阅读全文

posted @ 2016-10-10 01:52 Zhentiw 阅读(557) 评论(0) 推荐(0)

[RxJS] ReplaySubject with buffer

摘要： A BehaviorSubject can remember the latest value emitted, but what if we wanted Observer B to see all the previous values emitted in the past? We can't 阅读全文

posted @ 2016-10-10 01:09 Zhentiw 阅读(416) 评论(0) 推荐(0)

[Ramda] Declaratively Map Predicates to Object Properties Using Ramda where

摘要： Sometimes you need to filter an array of objects or perform other conditional logic based on a combination of factors. Ramda's where function gives yo 阅读全文

posted @ 2016-10-10 00:53 Zhentiw 阅读(271) 评论(0) 推荐(0)

[Ramda] Pluck & Props: Get the prop(s) from object array

摘要： Pluck: Get one prop from the object array: Props: 阅读全文

posted @ 2016-10-10 00:48 Zhentiw 阅读(397) 评论(0) 推荐(0)

[Ramda] Complement: Logic opposite function

摘要： Take a function as arguement, and the function only return true of false. If the function 'f' return ture, when complement(f) will return false. var i 阅读全文

posted @ 2016-10-10 00:44 Zhentiw 阅读(302) 评论(0) 推荐(0)

2016年10月9日

[TypeScript] Distinguishing between types of Strings in TypeScript

摘要： In JavaScript, many libraries use string arguments to change behavior. In this lesson we learn how Typescript catches string related errors at compile 阅读全文

posted @ 2016-10-09 03:29 Zhentiw 阅读(186) 评论(0) 推荐(0)

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