Unverified50% confidenceFactExact time
Option/Maybe类型是代数数据类型,在Haskell中称为Maybe,在Rust中为Option,在Swift中为Optional
1
Sources
50%
Confidence
Long-term
Relevance
8/19/2026
First Seen
Sources
Related Claims
UnverifiedRust 通过 Option<T> 类型在类型系统层面区分'有值'和'无值'62% similarUnverifiedSQLite默认情况下任何类型的数据都可以写入任何列,官方称之为「灵活类型」(flexible typing)60% similarUnverifiedHaskell的类型类和高阶类型提供了极强的抽象能力,依赖类型语言Idris能在类型层面证明程序的正确性59% similarUnverifiedLean4底层采用依值类型论,证明一个定理在形式上等同于编写一段类型正确的程序54% similarVerifiedRust中变量默认是不可变的(immutable),需要加mut关键字才能修改52% similar
Cite This Claim
Stable URI
https://kongchang.com/claim/773116API
curl https://kongchang.com/api/v1/knowledge/claims/773116MCP
get_claim(id=773116)