The thread safety of lazy variables in Swift

Foreword

This article was written based on my personal perspective. Occasionally I found the usage of lazy variables from pull requests, and most of the times the thread safety issue of them was not properly handled. I…

A curious case of NSAttributedString

Foreword

If you encounter problems of properly setting/adding attributes to NSAttributedString while the string is composed of multibyte character sets, or MBCS for short, then this article is for you.

The git commands that are useful to me, yet I couldn’t remember

git remote update origin — prune # remove branches that are no longer available in origin

git merge — squash <branch> # merge all commits as one commit

My little trick to avoid duplicate code for inherited initializers

Duplicate code is annoying

From time to time, I got into a situation that I need to override initializers, inherited from a superclass, for my own class. For instance:

Besides [String: Any]/除了 [String: Any] 之外

偶爾，我會遇見宣告成 [String: Any]的參數。

From time to time I encounter parameters declared as [String: Any].

雖然這樣的宣告提供了字典類別攜帶各種類別的值的彈性，但取值時卻常帶來麻煩。也許你曾讀到過類似的原始碼：

Namespace: from the perspective of dependency and the artifact of a project

Prelude

It happened when I was thinking where to put a constant property of the default debug log level in my iOS project. The project contains a host app and an…