Tap a claim on the ring to put it at the centre.
← What clean-code polymorphism really costs you is not the virtual call…
17 connected korrents · 10 moments on record from 15 Oct 2019 to 3 Sept 2026. Nearly all of them are about compilers .
Everything filed under software performance
software performance
Everything filed under JavaScript
JavaScript
Everything filed under benchmarks
benchmarks
Everything filed under open source
open source
Everything filed under design
design
Everything filed under simplicity
simplicity Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: What clean-code polymorphism really costs you is not the virtual call but the optimizations the compiler can no longer perform once it cannot see what runs. What clean-code polymorphism really costs you is not the virtual call but the optimizations the compiler can no longer perform once it cannot see what runs. Last stated 2 weeks ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: A compiler that also serves an IDE has to be lazy and deferred throughout — a different way of building compilers from the one the textbooks teach. — tap to centre the map on it A compiler that also serves an IDE has to be lazy and deferred throughout — a different way of building compilers from the one the textbooks teach. Last stated 4 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: A compiler that names every place a change breaks turns refactoring into fixing errors until the compiler stops shouting. — tap to centre the map on it A compiler that names every place a change breaks turns refactoring into fixing errors until the compiler stops shouting. Last stated 4 months ago
20 May 2026
AR
Alice Ryhl — holds since 2026-05-20 — tap for who they are
Same subject: A programming language is not a compiler but an experience: editing, running, debugging and the runtime library all have to fit together as one cycle. — tap to centre the map on it A programming language is not a compiler but an experience: editing, running, debugging and the runtime library all have to fit together as one cycle. Last stated 4 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: A speed difference between languages that share the LLVM backend measures the benchmark author, not the languages. — tap to centre the map on it A speed difference between languages that share the LLVM backend measures the benchmark author, not the languages. Last stated a year ago
22 Mar 2025
TH
ThePrimeagen — holds since 2025-03-22 — tap for who they are
Same subject: Assembly is far simpler to learn than the modern web stack: anyone who can vertically centre a div can learn to read it. — tap to centre the map on it Assembly is far simpler to learn than the modern web stack: anyone who can vertically centre a div can learn to read it. Last stated 2 weeks ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: Deep compiler knowledge is still interesting, but it is no longer useful to a working engineer in any meaningful sense. — tap to centre the map on it Deep compiler knowledge is still interesting, but it is no longer useful to a working engineer in any meaningful sense. Last stated 6 months ago
11 Mar 2026
SY
Steve Yegge — holds since 2026-03-11 — tap for who they are
Same subject: In every developer-tool category — databases, compilers, whatever — the open source option eventually becomes the default option. — tap to centre the map on it In every developer-tool category — databases, compilers, whatever — the open source option eventually becomes the default option. Last stated 3 months ago
27 May 2026
DR
Dax Raad — holds since 2026-05-27 — tap for who they are
Same subject: Language design is ninety per cent the same work every time and ten per cent new, which is why the experience carries from one language to the next. — tap to centre the map on it Language design is ninety per cent the same work every time and ten per cent new, which is why the experience carries from one language to the next. Last stated 4 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: "Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices. — tap to centre the map on it "Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices. Last stated 3 weeks ago
19 Aug 2026
AO
Addy Osmani — holds since 2026-08-19 — tap for who they are
Same subject: "Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove. — tap to centre the map on it "Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove. Last stated 2 weeks ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen. — tap to centre the map on it A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen. Last stated 2 weeks ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: Code and files generated by tools are pollution: hand-writing them is worth the effort because the bloat slows everything down for everyone. — tap to centre the map on it Code and files generated by tools are pollution: hand-writing them is worth the effort because the bloat slows everything down for everyone. Last stated 7 years ago
15 Oct 2019
DS
Derek Sivers — holds since 2019-10-15 — tap for who they are
Same subject: Generators emit thousands of lines where ten would do, and that waste is why people think their phone is slow. — tap to centre the map on it Generators emit thousands of lines where ten would do, and that waste is why people think their phone is slow. Last stated 7 years ago
15 Oct 2019
DS
Derek Sivers — holds since 2019-10-15 — tap for who they are
Same subject: AI acceleration threatens 'less software': without the constraint of scarce hours, even 37signals will likely build too much. — tap to centre the map on it AI acceleration threatens 'less software': without the constraint of scarce hours, even 37signals will likely build too much. Last stated a month ago
26 Jul 2026
DH
David Heinemeier Hansson — holds since 2026-07-26 — tap for who they are
Same subject: Optimizing JavaScript chunking strategy can produce significant efficiency gains at internet scale — tap to centre the map on it Optimizing JavaScript chunking strategy can produce significant efficiency gains at internet scale Last stated 5 days ago
3 Sept 2026
GR
Guillermo Rauch — holds since 2026-09-03 — tap for who they are
Same subject: A proprietary language licensed from Microsoft had zero chance in the JavaScript ecosystem: TypeScript had to be open source or nobody would come. — tap to centre the map on it A proprietary language licensed from Microsoft had zero chance in the JavaScript ecosystem: TypeScript had to be open source or nobody would come. Last stated 4 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: Because its types are erased before the program runs, TypeScript can afford not to be sound: checking 99% beats the 0% JavaScript checked, and buys features a sound language cannot offer. — tap to centre the map on it Because its types are erased before the program runs, TypeScript can afford not to be sound: checking 99% beats the 0% JavaScript checked, and buys features a sound language cannot offer. Last stated 4 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
At the centre
What clean-code polymorphism really costs you is not the virtual call but the optimizations the compiler can no longer perform once it cannot see what runs.
Holds CM Casey MuratoriRead this korrent →
A compiler that also serves an IDE has to be lazy and deferred throughout — a different way of building compilers from the one the textbooks teach.
Holds AH Anders Hejlsberg
A compiler that names every place a change breaks turns refactoring into fixing errors until the compiler stops shouting.
Holds AR Alice Ryhl
A programming language is not a compiler but an experience: editing, running, debugging and the runtime library all have to fit together as one cycle.
Holds AH Anders Hejlsberg
A speed difference between languages that share the LLVM backend measures the benchmark author, not the languages.
Holds TH ThePrimeagen
Assembly is far simpler to learn than the modern web stack: anyone who can vertically centre a div can learn to read it.
Holds CM Casey Muratori
Deep compiler knowledge is still interesting, but it is no longer useful to a working engineer in any meaningful sense.
Holds SY Steve Yegge
In every developer-tool category — databases, compilers, whatever — the open source option eventually becomes the default option.
Holds
Language design is ninety per cent the same work every time and ten per cent new, which is why the experience carries from one language to the next.
Holds AH Anders Hejlsberg
"Is the page loaded?" was never a real question, and web performance only became measurable once it was broken into the distinct moments a user actually notices.
Holds AO Addy Osmani
"Optimize it later" would be safe advice only if every engineer already knew how to avoid the architectural mistakes that no later optimization can remove.
Holds CM Casey Muratori
A 300-millisecond response budget is not an achievement but an admission: 300 milliseconds is an eternity in computing, and a product pitching it shows how far the bar has fallen.
Holds CM Casey Muratori
Code and files generated by tools are pollution: hand-writing them is worth the effort because the bloat slows everything down for everyone.
Holds
Generators emit thousands of lines where ten would do, and that waste is why people think their phone is slow.
Holds
AI acceleration threatens 'less software': without the constraint of scarce hours, even 37signals will likely build too much.
Holds
Optimizing JavaScript chunking strategy can produce significant efficiency gains at internet scale
Holds
A proprietary language licensed from Microsoft had zero chance in the JavaScript ecosystem: TypeScript had to be open source or nobody would come.
Holds AH Anders Hejlsberg
Because its types are erased before the program runs, TypeScript can afford not to be sound: checking 99% beats the 0% JavaScript checked, and buys features a sound language cannot offer.
Holds AH Anders Hejlsberg