David Ungar @senderPath

Computer Scientist fascinated by how people use language and/or think. blog.davidungar.net Add your location Joined October 2011

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Lawrence M. Krauss @LKrauss1

a year ago

Truly amazing New Horizon footage of Pluto.

Curiosity @MAstronomers

a year ago

Truly amazing New Horizon footage of Pluto.

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David Ungar @senderPath

2 years ago

Clarifying: Flattening a linked data structure into an array, using indices for pointers. That's *all* you could do in FORTRAN. I wrote cross-assemblers for TI minicomputers that way in 1975.

David Ungar @senderPath

2 years ago

Clarifying: Flattening a linked data structure into an array, using indices for pointers. That's *all* you could do in FORTRAN. I wrote cross-assemblers for TI minicomputers that way in 1975.

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David Ungar @senderPath

3 years ago

Be thoughtful when applying a theoretical result to the real world as shown here: hillelwayne.com/post/np-hard/?… Hard, or undecidable in theory may not mean impractical for real problems.

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David Ungar @senderPath

3 years ago

thehackernews.com/2022/08/as-nas… has me wondering about the state of security research wrt reference counting vs mark-sweep GC. Thoughts?

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David Ungar @senderPath

3 years ago

A masterpiece of snark by @emeryberger : sigarch.org/coping-with-co…

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BTW, after 4 yrs at Apple working on Swift, I realize that production programming is very different from research programming is very different from hobby programming, even when all in the same language, same IDE. All respectable, aim to be clear which one I mean at all times.

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David Ungar @senderPath

4 years ago

Why so much about context? Now, I'm using Swift/Xcode. (Have worked on speeding Swift compiles.) Very very different from Self, but aimed a very different context! Deeply appreciate what that team has done. Huge set of goals, technical and non-. Tough tradeoffs. (miles in shoes)

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Gurwinder @G_S_Bhogal

4 years ago

38. Idiocy Saturation: Online, people who don't think before they post are able to post more often than people who do. As a result, the average social media post is stupider than the average social media user. Worth remembering whenever Twitter dumbassery drives you to despair.

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David Ungar @senderPath

4 years ago

Just greatly enjoyed: Stephen Fry & Lawrence Krauss youtu.be/O0SNKCRV5Wg Was reminded that I have a suspicion that the question of free will has much to do with some flaw in the way we put notions into language. I say that I have no choice but to believe in free will.

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David Ungar @senderPath

4 years ago

When I was young, I used to have to wait for my radio to warm up. Then we got solid-state and my transistorized stereo turned on instantly. Now, I have to wait for my receiver to boot up, feh! What was ours, is ours again, sadly in this case.

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David Ungar @senderPath

4 years ago

Today, we need our apps to run on battery power. That has something to do with it, but IIRC Lars Bak worked on that. Also, modern apps do much more. Finally, it could be me. Memory can be fallible. I could have been better at incidental complexity then. Still...

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David Ungar @senderPath

4 years ago

Just ran across & recommend gbracha.blogspot.com/2020/05/bits-o… and wirfs-brock.com/allen/posts/914 . (I was involved.) @Gilad_Bracha @awbjs Great look back. But Smalltalk (and esp. Self) were better for creativity than the mainstream IDE/PL I use. Only partly for good reasons.

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wil shipley @wilshipley

4 years ago

Something magical happened in Xcode 13 beta 2, where when I do a recompile of my 2,217 source files (stacked in 16 frameworks and an app) it now will compile only like 6 files.

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wil shipley @wilshipley

4 years ago

@slava_pestov @senderPath @CodaFi_ The speedup for my app is incredible. Here’s the stack of Swift frameworks that make up Dwelling — you can imagine the speed difference this change has made.

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David Ungar @senderPath

4 years ago

Optimizing and Debugging Incremental Build Time in Swift 5.5 forums.swift.org/t/optimizing-a…

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David Ungar @senderPath

4 years ago

Thanks to a great team for getting there!

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David Ungar @senderPath

4 years ago

At 12:45 in developer.apple.com/wwdc21/10192 , check out Incremental Imports. Now, you can change imported code without recompiling every file in the importer. I have been focused on this for years.