<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Hacker News: perfopt</title><link>https://news.ycombinator.com/user?id=perfopt</link><description>Hacker News RSS</description><docs>https://hnrss.org/</docs><generator>hnrss v2.1.1</generator><lastBuildDate>Tue, 28 Apr 2026 21:58:59 +0000</lastBuildDate><atom:link href="https://hnrss.org/user?id=perfopt" rel="self" type="application/rss+xml"></atom:link><item><title><![CDATA[New comment by perfopt in "Common Rust Lifetime Misconceptions (2020)"]]></title><description><![CDATA[
<p>I use ChatGPT to ask questions about my code - including rust lifetimes - and usually get pretty good detailed answers. More recently I started using diesel ORM and was pleasantly surprised that the bot can answer questions about diesel usage.</p>
]]></description><pubDate>Tue, 05 Dec 2023 05:49:04 +0000</pubDate><link>https://news.ycombinator.com/item?id=38527537</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=38527537</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=38527537</guid></item><item><title><![CDATA[New comment by perfopt in "What has changed in CPU cores in M3 chips?"]]></title><description><![CDATA[
<p>I am still rocking a 2012 MBP. I even have a PPC MacMini but it now runs Linux. I have no idea who is upgrading from a M1/M2 to M3 or why they would</p>
]]></description><pubDate>Wed, 22 Nov 2023 14:09:22 +0000</pubDate><link>https://news.ycombinator.com/item?id=38379338</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=38379338</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=38379338</guid></item><item><title><![CDATA[New comment by perfopt in "Apple's use of Swift and SwiftUI in iOS 17"]]></title><description><![CDATA[
<p>I learnt Swift several years ago for a App project Haven't really used it since.<p>My impression is that it is useful only in the Apple ecosystem. It that correct? Is it worth learning for things other than iOS and macOS applications?</p>
]]></description><pubDate>Sat, 21 Oct 2023 14:18:36 +0000</pubDate><link>https://news.ycombinator.com/item?id=37966959</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=37966959</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=37966959</guid></item><item><title><![CDATA[New comment by perfopt in "UPI Payments: 10B transactions a month done, next stop 100B"]]></title><description><![CDATA[
<p>This is exactly why banks are unhappy - they have to bear the infra cost. This is also the reason the government is trying to push UPI wallet. I suspect at some future point UPI (non-wallet) transactions will be charged a small fee and wallet transactions will not.</p>
]]></description><pubDate>Sun, 03 Sep 2023 09:50:54 +0000</pubDate><link>https://news.ycombinator.com/item?id=37369074</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=37369074</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=37369074</guid></item><item><title><![CDATA[New comment by perfopt in "UPI Payments: 10B transactions a month done, next stop 100B"]]></title><description><![CDATA[
<p>I have not seen a single eatery that does not accept cash.<p>Booking bus tickets - RedBus and other portals accept credit cards. To use cash one must book at the terminal.</p>
]]></description><pubDate>Sun, 03 Sep 2023 09:48:04 +0000</pubDate><link>https://news.ycombinator.com/item?id=37369059</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=37369059</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=37369059</guid></item><item><title><![CDATA[New comment by perfopt in "My Overkill Home Network"]]></title><description><![CDATA[
<p>Could you share how you set up the cloud backup? Also, what cloud providers you use</p>
]]></description><pubDate>Fri, 11 Aug 2023 10:21:19 +0000</pubDate><link>https://news.ycombinator.com/item?id=37087033</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=37087033</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=37087033</guid></item><item><title><![CDATA[New comment by perfopt in "A Single-Cycle 64-Bit RISC-V Register File"]]></title><description><![CDATA[
<p>Perhaps showing the synthesized gates and how say a structural version of the code will synthesize would explain in more detail</p>
]]></description><pubDate>Sat, 05 Aug 2023 13:27:40 +0000</pubDate><link>https://news.ycombinator.com/item?id=37011816</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=37011816</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=37011816</guid></item><item><title><![CDATA[New comment by perfopt in "India’s ban on rice exports raises fear of global food price rises"]]></title><description><![CDATA[
<p>India had a scorching summer and now heavy rains in many parts of the country. The government is just being prudent and ensuring sufficient local stock.</p>
]]></description><pubDate>Fri, 21 Jul 2023 15:47:21 +0000</pubDate><link>https://news.ycombinator.com/item?id=36815229</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=36815229</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=36815229</guid></item><item><title><![CDATA[New comment by perfopt in "Apple Vision Pro: Apple’s first spatial computer"]]></title><description><![CDATA[
<p>The iPhone wowed everyone but its price was heavily criticized. Apple later got into the exclusive AT&T deal which "subsidized" the price. People just ended up paying more over time.</p>
]]></description><pubDate>Tue, 06 Jun 2023 03:53:39 +0000</pubDate><link>https://news.ycombinator.com/item?id=36207869</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=36207869</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=36207869</guid></item><item><title><![CDATA[New comment by perfopt in "[dead]"]]></title><description><![CDATA[
<p>Martin Meyerson Berkeley Faculty Research Lecture: Jitendra Malik</p>
]]></description><pubDate>Tue, 21 Mar 2023 04:58:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=35242723</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=35242723</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=35242723</guid></item><item><title><![CDATA[New comment by perfopt in "British boy who taught himself to read aged two joins Mensa"]]></title><description><![CDATA[
<p>Hmm...how do we know he is not a Transformer?</p>
]]></description><pubDate>Tue, 24 Jan 2023 11:55:24 +0000</pubDate><link>https://news.ycombinator.com/item?id=34502477</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=34502477</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=34502477</guid></item><item><title><![CDATA[New comment by perfopt in "Show HN: New AI edits images based on text instructions"]]></title><description><![CDATA[
<p>Ubuntu 22.04.1 LTS. I'll file a issue</p>
]]></description><pubDate>Sun, 22 Jan 2023 11:19:04 +0000</pubDate><link>https://news.ycombinator.com/item?id=34476293</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=34476293</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=34476293</guid></item><item><title><![CDATA[New comment by perfopt in "Show HN: New AI edits images based on text instructions"]]></title><description><![CDATA[
<p>I keep seeing this even when the prompt is unchanged<p>Downloading <a href="https://huggingface.co/runwayml/stable-diffusion-v1-5/resolve/889b629140e71758e1e0006e355c331a5744b4bf/v1-5-pruned-emaonly.ckpt" rel="nofollow">https://huggingface.co/runwayml/stable-diffusion-v1-5/resolv...</a> from huggingface
Loading model /home/hrishi/.cache/huggingface/hub/models--runwayml--stable-diffusion-v1-5/snapshots/889b629140e71758e1e0006e355c331a5744b4bf/v1-5-pruned-emaonly.ckpt onto cuda backend...<p>followed by a download</p>
]]></description><pubDate>Sun, 22 Jan 2023 11:00:32 +0000</pubDate><link>https://news.ycombinator.com/item?id=34476187</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=34476187</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=34476187</guid></item><item><title><![CDATA[New comment by perfopt in "Show HN: New AI edits images based on text instructions"]]></title><description><![CDATA[
<p>OK. I noticed that the images are not accurate when I give my own descriptions. Not sure if this is a limitation of Stable Diffusion. For example, for the text 
"cat and mouse samurai fight  in a forest, watched by a porcupine" I got a cat and a mouse (with a cat's face and tail!!) in a forest sort of fighting. But no - porcupine<p>Thank you for creating this.</p>
]]></description><pubDate>Sun, 22 Jan 2023 10:55:26 +0000</pubDate><link>https://news.ycombinator.com/item?id=34476153</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=34476153</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=34476153</guid></item><item><title><![CDATA[New comment by perfopt in "Show HN: New AI edits images based on text instructions"]]></title><description><![CDATA[
<p>How does this work? When I run it on a machine with a GPU  (pytorch, CUDA etc installed) I still see it downloading files for each prompt. Is the image being generated on the cloud somewhere or on my local machine? Why the downloads?</p>
]]></description><pubDate>Sun, 22 Jan 2023 10:39:16 +0000</pubDate><link>https://news.ycombinator.com/item?id=34476065</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=34476065</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=34476065</guid></item><item><title><![CDATA[New comment by perfopt in "VALL-E: Neural codec language models are zero-shot text to speech synthesizers"]]></title><description><![CDATA[
<p>Could someone explain what is "Speaker prompt" in this context?</p>
]]></description><pubDate>Fri, 06 Jan 2023 13:03:29 +0000</pubDate><link>https://news.ycombinator.com/item?id=34274171</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=34274171</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=34274171</guid></item><item><title><![CDATA[New comment by perfopt in "Why I'm still using Python"]]></title><description><![CDATA[
<p>Aah Turbo Pascal. That was the first "big pants" language I learnt and enjoyed.<p>After that... C++ was fun initially and later felt way too featured. I don't like C++ code now (especially with heavy template use and stl and boost).<p>I now code in Python (because most of the things I work on are in Python) though I don't like the dynamic typing.<p>My potential new love is Rust but we are still working out some issues</p>
]]></description><pubDate>Sat, 31 Dec 2022 12:51:24 +0000</pubDate><link>https://news.ycombinator.com/item?id=34196011</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=34196011</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=34196011</guid></item><item><title><![CDATA[New comment by perfopt in "Tell HN: On macOS, `man-preview` opens man pages in Preview"]]></title><description><![CDATA[
<p>~ % which man-preview<p>man-preview not found</p>
]]></description><pubDate>Fri, 11 Nov 2022 16:04:11 +0000</pubDate><link>https://news.ycombinator.com/item?id=33562494</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=33562494</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=33562494</guid></item><item><title><![CDATA[China's Underground Market for Chips Draws Desperate Automakers]]></title><description><![CDATA[
<p>Article URL: <a href="https://www.bloomberg.com/news/articles/2022-10-19/us-chip-sanctions-and-covid-spawn-china-s-secondhand-semiconductor-market">https://www.bloomberg.com/news/articles/2022-10-19/us-chip-sanctions-and-covid-spawn-china-s-secondhand-semiconductor-market</a></p>
<p>Comments URL: <a href="https://news.ycombinator.com/item?id=33263440">https://news.ycombinator.com/item?id=33263440</a></p>
<p>Points: 2</p>
<p># Comments: 0</p>
]]></description><pubDate>Wed, 19 Oct 2022 15:15:12 +0000</pubDate><link>https://www.bloomberg.com/news/articles/2022-10-19/us-chip-sanctions-and-covid-spawn-china-s-secondhand-semiconductor-market</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=33263440</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=33263440</guid></item><item><title><![CDATA[New comment by perfopt in "If You Want This Job, We Must Interview You Forever"]]></title><description><![CDATA[
<p>As long as you dont get carried away and spend it all</p>
]]></description><pubDate>Sat, 03 Sep 2022 16:09:51 +0000</pubDate><link>https://news.ycombinator.com/item?id=32703243</link><dc:creator>perfopt</dc:creator><comments>https://news.ycombinator.com/item?id=32703243</comments><guid isPermaLink="false">https://news.ycombinator.com/item?id=32703243</guid></item></channel></rss>