Why Isn't a Lifetime Annotation Needed Here?
原文英文,约100词,阅读约需1分钟。发表于: 。我在看教程的时候看到生命周期,然后回看前面的教程: When I read the tutorial, I see the Lifetime chapter, and then look back at the previous chapter .There is one of that sample code: fn main() { let s1 =...
calculate_length和usize可以不用声明生命周期'a就可以正常使用,而生命周期教程中却要求声明。