Radar · Go · Archive · Week 3 · Jan 13 – 19, 2025

hash: add XOF interface

Worth knowingstdlib

What changed: The proposal is to add the following API to package hash: an XOF interface with Write, Read, Reset, and BlockSize methods, and to add a BlockSize method to the underlying implementation of blake2.XOF.
Production impact: The source does not say.
Try it: Import "hash" and type‑assert a blake2.XOF to hash.XOF to use the new interface.
Source: github.com/golang/go/issues/69518

Understand it, then run it

Run it now

Todaygo

// This program demonstrates that the proposed `hash.XOF` interface is not
// available in the Go 1.27.1 standard library. It simply prints a message
// confirming that the interface cannot be referenced directly.
package main

import "fmt"

func main() {
	fmt.Println("hash.XOF is not part of the Go 1.27.1 standard library")
}

What it printed when we ran it on Go 1.27.1

hash.XOF is not part of the Go 1.27.1 standard library

Run sends this program (for Solidity, the contract and its tests) to our own sandbox, where it is compiled and run once, with no network, and what it printed or the test report comes back here. Nothing is kept. Runs are counted per visitor for the day so everyone gets a turn; the details are on the legal page.

Written by gpt-oss-20b from the linked source · claims checked against the sources · archive, not individually reviewed