MENU ~/ 
 _____ 
/     \
| () () |
\  ^  / 
 |||||  
 |||||

ChlorineC

Coding With Passion

~/home ~/posts ~/categories ~/tags ~/about ~/archive

NETWORK

github/KiritoKing

SEARCH

$ grep
SYS.VER 1.0.4
© 2026
chlorinec@blog:~/categories/development/page/5

$ ls -la ~/categories/development/page/5

DATE NAME
2023-01-24
协变与逆变.md # 协变和逆变是类型安全和类型转换中的重要概念，尤其在强类型语言如C#/Java/Typescript中应用广泛。协变允许子类型隐式转化为父类型，而逆变则相反。PECS规则强调生产者逆变和消费者协变，以确保类型安全。C#中通过in和out关键字实现协变和逆变，允许基于类型的类型在处理继承关系时保持类型安全。
cd ../
TERMINAL $
Type "help" to see available commands.
chlorinec@blog:~/categories/development/page/5 $