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The daily ledger

TILens turns technical updates into a focused daily brief: official releases, trusted reporting, and practitioner analysis, deduplicated and organized by topic.

12 Jul 2026 edition

8 articles · 3 sources ·

Top topics: OCaml · Rust · Java

Rust

Const-first functions

Today, as far as I'm aware, Rust has two variants of const functions: const-capable functions that are only used as const when called from const context (regular const fn) "comptime" const functions that can only be…

Source: Rust Internals Forum nazar-pc
Java

Making ServiceLoader usable: a provider factory

I keep coming back to java.util.ServiceLoader. I have used it to put a JSON layer behind a contract, so the core code carries no direct dependency on any particular JSON library, and I can swap the implementation…

Source: A Java geek
OCaml

Effect Handlers in OCaml

A command-first tour of OCaml 5 effects: perform, handlers, generators, and where domains and eio fit in.

Source: OCaml Planet The Functional Programmer