Zhentiw - 博客园

2018年9月14日

[TypeScript] Collect Related Strings in a String Enum in TypeScript

摘要： As of TypeScript 2.4, it is now possible to define string enums, or more precisely, enums with string members. Just like any other numeric enum, strin 阅读全文

posted @ 2018-09-14 17:36 Zhentiw 阅读(320) 评论(0) 推荐(0)

[TypeScript] Overload a Function with TypeScript’s Overload Signatures

摘要： Some functions may have different return types depending on the types of the arguments with which they’re invoked. Using TypeScript’s function overloa 阅读全文

posted @ 2018-09-14 16:14 Zhentiw 阅读(430) 评论(0) 推荐(0)

[TypeScript] Use TypeScript’s never Type for Exhaustiveness Checking

摘要： TypeScript 2.0 introduced a new primitive type called never, the type of values that never occur. It helps model the completion behavior of functions 阅读全文

posted @ 2018-09-14 15:39 Zhentiw 阅读(332) 评论(0) 推荐(0)

[TypeScript] Represent Non-Primitive Types with TypeScript’s object Type

摘要： ypeScript 2.2 introduced the object, a type that represents any non-primitive type. It can be used to more accurately type methods such as Object.crea 阅读全文

posted @ 2018-09-14 15:25 Zhentiw 阅读(343) 评论(0) 推荐(0)

2018年9月13日

[TypeScript] Define Custom Type Guard Functions in TypeScript

摘要： One aspect of control flow based type analysis is that the TypeScript compiler narrows the type of a variable within a type guard. This lesson explore 阅读全文

posted @ 2018-09-13 14:50 Zhentiw 阅读(441) 评论(0) 推荐(0)

[Sqlite3] Sqlite Introduction

摘要： Check whether you have sqlite3 installed: To create a new db: Quit the editing mode: 阅读全文

posted @ 2018-09-13 03:54 Zhentiw 阅读(120) 评论(0) 推荐(0)

2018年9月12日

[Javascript] Flattening nested arrays: a little exercise in functional refactoring

摘要： In this lesson we write an imperative function to flatten nested arrays, and then use the popular map, reduce, compose, and pipe functions to transfor 阅读全文

posted @ 2018-09-12 17:43 Zhentiw 阅读(152) 评论(0) 推荐(0)

2018年9月8日

[GraphQL] Query Local and Remote Data in Apollo Link State

摘要： In this lesson, you will learn how to query local and remote data in Apollo Link State in the same component. We'll set the @client decorator on the l 阅读全文

posted @ 2018-09-08 22:46 Zhentiw 阅读(220) 评论(0) 推荐(0)

[Spring Boot ] Creating the Spring Boot Project : Demo: Creating a REST Controller

摘要： In Spring boot, define a REST API endpoint is pretty easy. 阅读全文

posted @ 2018-09-08 18:27 Zhentiw 阅读(182) 评论(0) 推荐(0)

[Web Analytics] Into to Web Analytics

摘要： Just to get started for myself. Any developer who doesn't care about the business is not a good software engineer. --Zhentian The cycle of doing analy 阅读全文

posted @ 2018-09-08 18:19 Zhentiw 阅读(188) 评论(0) 推荐(0)

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