#GenEricS

"An explanation of generic methods in Go, covering method-level type parameters and why dynamic dispatch prevents them from being declared inside interfaces."

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From Dev.to - java: Java Generics, Type Erasure, and a conceptual idea: reified generics as a first-class citizen?

Five infer recipes past the handbook: tuple last/head/tail, URL param extraction, overload-aware constructors, promise-chain resolution.

Branded types without unique symbol — phantom-string-literal brands compose better, with one collision trade-off. Pattern + use cases.

New generics in Canada likely mark the start of a decline in international revenue of semaglutide, the active ingredient in Novo's Ozempic and Wegovy.

Go's maps stdlib package: 8 functions that delete handwritten helpers. Keys/Values/Clone/Copy/DeleteFunc/Equal + the iter.Seq trap.

Generics in Go look free at the call site. The compiler bills you for them later in time go build and binary size. Three patterns that cut the bill.

You shipped generics in 2022 and still write any inside them. Three patterns where the escape hatch is hiding, and what the constraint should be.

any, comparable, cmp.Ordered, and the tilde. Four type-set constructs that decide whether your generic Go code compiles, and what it forgets.

In Q3 2024, 68% of Go production outages traced to unhandled generic type constraints in legacy 1.22...

Discover how Rust's const generics eliminate runtime overhead and type-unsafe code. Learn to write faster, safer generic functions with compile-time array sizes. Read more.

200+ uses of any in one Go codebase, three patterns under the hood. Generics, small consumer-side interfaces, and typed structs replaced almost all of it.

Four years in, Go generics have a clear shipping list. Type inference, comparable, Result/Option. And a list of things that still don't work.