gnosek

Or you can set the vm.swappiness sysctl to 0.

I'm happy with a TFA Dostmann 31.5009.02 Monitor CO2 AIRCO2NTROL Coach. Does what it says and you can get the measurements over USB if you want too.

[yet another reference to Ansible, sorry! :)]

This looks like infinity times better than Ansible in some cases and somewhat worse in others (python.call every time I'd need to access a previous operation's result feels clunky, though I certainly understand why it works that way).

Do you think it would be possible to use Ansible modules as pyinfra operations? As in, for example:

  - name: install foo
    apt:
      pkg: foo
      state: present

could be available as:

  from pyinfra import ansible

  ansible(name='install foo').apt(pkg='foo', state='present')

where the `ansible` function itself would know nothing about apt, just forward everything to the Ansible module.

Note 1: I know pyinfra has a way to interface with apt, this is just an example :) Note 2: It's just my curiosity, my sysadmin days are long gone now.

> Also, side note, the “copy con outputfilename.txt” idiom is one that I still can’t ever remember how to do the equivalent on UNIX/Linux!

cat > outputfilename.txt

I used external FHD displays and the result was a blurry mess with obvious fractional scaling applied (nothing was aligned to pixel boundaries)

or

    fn twiddle<I>(foozles: I)
    where
      I: Iterator<Item=Foozle>

(or probably IntoIterator<Item=Foozle>). `impl T` is (modulo some details I don't remember right now) just syntactic sugar for this.

Same. It takes a little effort to read but it's understandable and it does feel Croatian or thereabouts. On a somewhat funny note, Chrome decided to translate the page in Interslavic from Czech to Polish and did a passable job.

What I find fascinating about Slavic languages is that I can speak Polish in Slovakia*, get responses in Slovak and mostly understand each other. It has basically zero chance of success in the Czech Republic to the point where it's easier to find an English speaker. I speak neither Czech nor Slovak and I cannot really distinguish them but I had this experience multiple times. In written form, both are similarly understandable to me (I can get the gist and guess the rest).

* the caveat about szukanie czegoś do picia still applies though.

> It really depends on what the meaning of None is.

Exactly. This will generally be application specific so we can't choose The One Right Definition for adding `Option<i32>`s.

> Yours make sense if it means "zero", but that's far less useful.

Not in my experience but I agree there are different situations. Personally, I'd default to `Option<i32>::None` meaning "no number there, so just skip it"[1] and prefer `Result<i32, E>::Err` to denote "there should be a number here but we don't have one", which would behave like a SQL NULL (propagate in all calculations).

1. What's the length of data in a header-only packet? I wouldn't say it's zero, especially when trying to fit a read() like API on top of a framed protocol (read() returning Ok(0) marks the end of file).

I agree with all your other points but

> > We can’t perform arithmetic on an Option<int> any more than we could on a List<int>.

> Why not? One sensible definition is (...)

It's not the only sensible definition. It would be equally sensible to implement it as:

    Some(x) + Some(y) => Some(x+y)
    Some(x) + None => Some(x)
    None + Some(y) => Some(y)
    None + None => None

Is this viable as a backup/archive format? Would it make sense to e.g. have an incremental backup as a DwarFS file, referring to the base backup in another DwarFS file?

Exclamation mark. e.g.

    println!("hello, world");

or

    todo!();

are macro invocations.