标签:art ble opera sub null substring range val operation
1. nullable string
从前 string 一定是 nullable. 现在则不一定
string? name = null; 要加 ? 才可以表示 nullable
2. range operation
以前最讨厌翻译 js -> c# 遇到 substring
因为 js 的 substring 是 start, end
c# 的是 start, length
每次都要改成 start, end - start
现在可以直接 value[start..end] 结果就和 js 一样了。
标签:art ble opera sub null substring range val operation
原文地址:https://www.cnblogs.com/keatkeat/p/12155974.html