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Experience converting a mathematical software package to C++20 modules [PDF]

https://arxiv.org/abs/2506.21654
54•vblanco•4h ago

Comments

trostaft•58m ago
Oh, it’s Wolfgang. In computational math, he has a focus on research software that few others are able to do, he (the deal.ii team more generally) got an award for it last SIAMCSE. Generally a great writer, looking forward to reading this.
Asooka•40m ago
I would like to see a comparison between modules and precompiled headers. I have a suspicion that using precompiled headers could provide the same build time gains with much less work.
pjmlp•27m ago
As per Office team, modules are much faster, especially if you also make use of C++ standard library as module, available since C++23.

See VC++ devblogs and CppCon/C++Now talks from the team.

Pre-compiled headers have only worked well on Windows, and OS/2 back in the day.

For whatever reason UNIX compilers never had a great implementation of it.

With exception of clang header maps, which is anyway one of the first approaches to C++ modules.

A Sad Day for Physical Bitcoin Collectors

https://bitcointalk.org/index.php?topic=5543336.0
1•walterbell•5s ago•0 comments

1.58bit LLM Optimised Tensor Core

https://github.com/microsoft/T-MAC
1•galeos•1m ago•0 comments

Bezos-backed methane tracking satellite is lost in space

https://www.reuters.com/business/energy/bezos-backed-methane-tracking-satellite-is-lost-space-2025-07-01/
1•franksvalli•2m ago•0 comments

New model 'cypher-alpha' on Openrouter

https://openrouter.ai/openrouter/cypher-alpha:free
1•chrismustcode•2m ago•0 comments

Show HN: TrustyPost – An All-in-One Creator Toolkit (Design, AI, Scheduling)

1•terryosayawe•5m ago•0 comments

Love-hate relationship you grow with your product

1•yogini•5m ago•0 comments

Don't buy a drive blind – learn which type fits your needs

https://huzit.net/welche-festplatte-ist-die-beste-wahl-hdd-sata-ssd-oder-nvme/
1•RobotHead•6m ago•0 comments

China successfully tests hypersonic aircraft, maybe at Mach 12

https://www.theregister.com/2025/07/01/china_successfully_tests_hypersonic_aircraft/
1•rntn•7m ago•0 comments

Understanding Artifact Processing in ReARM

https://rearmhq.com/blog/2025-07-01-understanding-artifact-processing-in-rearm
1•taleodor•10m ago•0 comments

How much (little) are the AI companies making?

https://pluralistic.net/2025/06/30/accounting-gaffs/#artificial-income
1•Michelangelo11•11m ago•0 comments

Soft Ware for Hard Power (2024)

https://sofiechan.com/p/890
1•anon_wyly•12m ago•0 comments

Researchers Turn Plastic into Paracetamol

https://cen.acs.org/biological-chemistry/biotechnology/Researchers-turn-plastic-paracetamol/103/web/2025/06
1•gmays•13m ago•0 comments

MCP for Skeptics

https://www.speakeasy.com/mcp/mcp-for-skeptics
1•ritzaco•13m ago•0 comments

Ask HN: How are you evaluating your LLMs in production?

1•ReDeiPirati•16m ago•1 comments

Sam Altman Slams Meta's AI Talent Poaching: 'Missionaries Will Beat Mercenaries'

https://www.wired.com/story/sam-altman-meta-ai-talent-poaching-spree-leaked-messages/
3•spenvo•17m ago•0 comments

Ask HN: Does the world economy run on sales people?

1•ciwolex•17m ago•0 comments

Wayback Machine: One Trillion Web Pages Archived

https://blog.archive.org/2025/07/01/wayback-machine-to-hit-once-in-a-generation-milestone-this-october-one-trillion-web-pages-archived/
3•mikae1•17m ago•0 comments

Amazon launches a new AI foundation model to power its robotic fleet

https://www.aboutamazon.com/news/operations/amazon-million-robots-ai-foundation-model
2•srijan4•18m ago•0 comments

The Hoyle State (2021)

https://johncarlosbaez.wordpress.com/2021/02/04/the-hoyle-state/
7•gone35•18m ago•0 comments

ICEBlock – See Something, Tap Something

https://www.iceblock.app
4•pavel_lishin•19m ago•0 comments

After 48 years, Zilog is killing the classic standalone Z80 microprocessor chip

https://arstechnica.com/gadgets/2024/04/after-48-years-zilog-is-killing-the-classic-standalone-z80-microprocessor-chip/
2•airhangerf15•20m ago•1 comments

Dirac Large Numbers Hypothesis

https://en.wikipedia.org/wiki/Dirac_large_numbers_hypothesis
1•gone35•20m ago•0 comments

Nothing Phone (3) and Headphone (1) are here

https://nothing.community/d/35792-phone-3-and-headphone-1-are-here
1•SilverElfin•21m ago•0 comments

From Tyson to TikTok: the boxing fan generational gap is widening

https://www.theguardian.com/sport/2025/jun/17/boxing-young-fan-base-decline-future-us
1•PaulHoule•28m ago•0 comments

ECB commits to distributed ledger technology settlement plans

https://www.ecb.europa.eu/press/pr/date/2025/html/ecb.pr250701~f4a98dd9dc.en.html
1•wslh•29m ago•0 comments

Are AI Bots Behaving?

https://goodaibots.com/
2•tzury•29m ago•0 comments

Why Mushrooms Are Starting to Replace Everything [video]

https://www.youtube.com/watch?v=jI2LC3WTryw
1•simonebrunozzi•30m ago•0 comments

Show HN: Runik – Turn fan wikis into e-reader dictionaries

https://github.com/Runik-3/core
1•skoutXII•30m ago•0 comments

Foyer aims to be an efficient and user-friendly hybrid cache lib in Rust

https://github.com/foyer-rs/foyer
1•Sheldon_fun•32m ago•0 comments

Performance and Power of the Low-Cost EPYC 4005 vs. Original EPYC 7601 Zen 1

https://www.phoronix.com/review/amd-epyc-4005-server
1•vok•32m ago•0 comments