Hacker News: scatters

New comment by scatters in "Learn Modern C++"

scatters — Tue, 26 Dec 2023 20:31:46 +0000

We walked that back, sorry. http://eel.is/c++draft/diff.cpp20.lex#1

  Change: Previously valid identifiers containing characters not present in UAX #44 properties XID_Start or XID_Continue, or not in Normalization Form C, are now rejected.
  Rationale: Prevent confusing characters in identifiers. Requiring normalization of names ensures consistent linker behavior.
  Effect on original feature: Some identifiers are no longer well-formed.

New comment by scatters in "Learn Modern C++"

scatters — Tue, 26 Dec 2023 20:27:17 +0000

> I don't know how recent those versions are

gcc 14 has not yet been released; going by past years, 14.1 should come out around the start of May (2024). clang 17 was released September (2023); note that you need to use libc++ (stlib=libc++), not libstdc++. VS 2022 17.7 has been out since August.

New comment by scatters in "Studying stars with central black holes"

scatters — Sun, 17 Dec 2023 00:26:25 +0000

A radially symmetric object does not produce gravitational waves, whether it is spinning or not, since it has zero quadropole moment.

New comment by scatters in "Why did older computers and OSes use UPPER case instead of lower case?"

scatters — Fri, 15 Dec 2023 00:52:36 +0000

The Remington No. 1 - which introduced the QWERTY layout - omitted number keys for 0 and 1; the O and I letter keys were considered sufficient. The No. 2 added a shift key, and a full number row.

New comment by scatters in "Apple cuts off Beeper Mini's access"

scatters — Sat, 09 Dec 2023 01:13:42 +0000

Does Apple block imessage on rooted phones? If not, what level of device security do you really have?

New comment by scatters in "Why you can't divide by zero"

scatters — Sun, 03 Dec 2023 06:02:57 +0000

    ceil(0.000001) = 1
    ceil(0) =... 0? Wtf?

But that's a perfectly well defined function. Not every function has to be continuous.

New comment by scatters in "Airlines will make $118B in extra fees"

scatters — Mon, 20 Nov 2023 22:27:01 +0000

Is there outrage when a clothes store puts the items they haven't been able to shift onto the sales rack? Is there outrage when a grocery store puts discount stickers on the food that's approaching its sell by date? Dynamic pricing is a fact of life in very many sectors.

New comment by scatters in "Pentagon fails audit for sixth year in a row"

scatters — Sat, 18 Nov 2023 00:38:30 +0000

Sticking gold in a vault is only a means to saving if you have a reasonable expectation that when you take it out you can use it to obtain goods and services. It is thus a disguised claim on future production, and so relies on debt to exactly the same degree as bank money.

New comment by scatters in "280M e-bikes and mopeds are cutting demand for oil far more than electric cars"

scatters — Fri, 17 Nov 2023 20:16:35 +0000

I'd be happy if they have an easier and safer commute because everyone else is staying home.

New comment by scatters in "Pentagon fails audit for sixth year in a row"

scatters — Fri, 17 Nov 2023 20:01:09 +0000

No, they couldn't. One person's savings is another person's debt. If everyone tries to save then no one can; this is the paradox of thrift.

New comment by scatters in "Pentagon fails audit for sixth year in a row"

scatters — Fri, 17 Nov 2023 19:58:06 +0000

The Russian rouble was not free floating prior to the crisis. They tried to defy the iron triangle and paid for it. This is not a problem for the USA, since other currencies are denominated in terms of the dollar.

The reason it would be impossible for the US to default is that the US is not significantly in debt. Most of the federal debt is held domestically, meaning by the US. You can't be in debt to yourself.

New comment by scatters in "The shortest papers ever published (2016)"

scatters — Sat, 21 Oct 2023 00:33:43 +0000

It exhibits two distinct constructions both of which demonstrate that n^2 + 2 unit equilateral triangles are sufficient to cover an equilateral triangle of side n + ε. The obvious area argument shows that at least n^2 + 1 are required.

A small modification of the second figure can show that for any non-equilateral triangle, n^2 + 1 such triangles will cover a similar triangle of length ration 1 : n + ε; it remains (as of 2010, at least; see [1]) an open problem whether a construction of n^2 + 1 triangles exists in the equilateral case.

1. http://www.wfnmc.org/mc20101.pdf

New comment by scatters in "Stockholm to ban petrol and diesel cars from centre from 2025"

scatters — Wed, 11 Oct 2023 16:49:08 +0000

OpenStreetMap has the zone as a map feature: https://www.openstreetmap.org/way/127782964

New comment by scatters in "Stockholm to ban petrol and diesel cars from centre from 2025"

scatters — Wed, 11 Oct 2023 16:38:14 +0000

Try driving to get your groceries with epilepsy or a vision impairment.

New comment by scatters in "How to see bright, vivid images in your mind’s eye (2016)"

scatters — Sun, 01 Oct 2023 15:34:57 +0000

Location and vision are separate senses. I'm completely aphantasic, but of course I can orient myself in remembered spaces. Fictional spaces are more difficult, but not impossible if the description is good.

New comment by scatters in "How to see bright, vivid images in your mind’s eye (2016)"

scatters — Sun, 01 Oct 2023 15:26:12 +0000

We write the same way an LLM does; by putting together words in the order that convention dictates. It's less of a chore if we can make them mean something by metaphor or allusion; in your example, the author clearly intends to signify something by the glistening of the raindrops, the redness of the leaves and the color of the grass, else why mention it?

New comment by scatters in "WiFi without internet on a Southwest flight"

scatters — Thu, 28 Sep 2023 16:27:08 +0000

Clarification: a knot is one nautical mile per hour.

New comment by scatters in "UK Parliament undermined the privacy, security, freedom of all internet users"

scatters — Thu, 21 Sep 2023 12:50:36 +0000

The politicians are aware their messages are being read already. This just opens up existing practice and levels the field.

New comment by scatters in "UK Parliament undermined the privacy, security, freedom of all internet users"

scatters — Thu, 21 Sep 2023 12:37:17 +0000

The referendum was advisory. The decision to leave the EU was made by parliament, not by the people.

With that out of the way, you should read "EU" as being in parentheses.

New comment by scatters in "Lodash just declared issue bankruptcy and closed every issue and open PR"

scatters — Sat, 16 Sep 2023 23:22:34 +0000

The CADT model continues to demonstrate its relevance.