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#php
#kotlin
#bash
#go
#sql
#rust
#typescript
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#java
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Kotlin
Enums with Properties and Methods
Kotlin enums can carry constructor properties and define methods — including abstract methods overridden per constant. Way more expressive than Java enums.
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Rust
Serde — Field Rename, Skip, and Tagging
Per-field attributes let you map between Rust's snake_case and the JSON's camelCase, skip optional fields, and tag enum variants the way external APIs expect.
TypeScript
const Assertions for Literal Types
`as const` freezes a value as deeply readonly and infers the narrowest possible literal types. Replaces enums for most use cases — better tree-shaking, no runtime cost.
Go
iota — Auto-Incrementing Constants (Enums)
Go has no `enum` keyword but `iota` inside a const block gives you the same effect. Each line is the previous expression with iota auto-incremented.