lumix comments

Repositories
Issues
Comments

Results 6 comments of


                                            lumix

第 10 题：简单手写实现promise

> 附加需求: > > 1. catch完允许恢复 > 2. then/catch的回调允许返回Promise > > ```js > let isThenable = x => !!(x!==undefined && x.then); > let runThenable = (func, arg) => isThenable(arg) ?...

[Feature] Math Formula ARABIC

@lumixraku solve it

[Feature] Math Formula ACOTH

@lumixraku solve it

[Feature] Math Formula ASIN

@lumixraku solve it

[Bug] When setting the background color of the frame selection range, the background color of the cell is missing when clicking repeatedly

Both Chrome and Edge on windows can not reproduce this issue

巧用ES系列4: TypeScript中的问号 ? 与感叹号 ! 是什么意思？

> > 无意间听到这种用法： > > `person?.name?.firstName` 可以理解成 `person && person.name && person.firstName` > > 认真的么认真的，在试图访问的属性后面加上小问号就是 if not undefined 的逻辑