Estoy practicando Ruby con el libro Head First (muy recomendado), y me doy cuenta que es bastante diferente a otros lenguajes que conozco y me gustan como Python, JS, C#. Le estoy apostando sobre Go, PHP y otros. Espero sea buena decisión

Everyday Carry
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And that I can silence it without having or go through the full test announcing fire and carbon monox throughout the house.

@abucci@anthony.buc.ci Its not better than a Cat5e. I have had two versions of the device. The old ones were only 200Mbps i didn’t have the MAC issue but its like using an old 10baseT. The newer model can support 1Gbps on each port for a total bandwidth of 2Gbps.. i typically would see 400-500Mbps from my Wifi6 router. I am not sure if it was some type of internal timeout or being confused by switching between different wifi access points and seeing the mac on different sides.

Right now I have my wifi connected directly with a cat6e this gets me just under my providers 1.3G downlink. the only thing faster is plugging in directly.

MoCA is a good option, they have 2.5G models in the same price range as the 1G Powerline models BUT, only if you have the coax in wall already.. which puts you in the same spot if you don’t. You are for sure going to have an outlet in every room of the house by code.

Public Service Announcement: Fear not, we’re still on patrol and ask you to keep a close eye on your Yarn neighborhood. We got some reports of suspicious activities going on in the background lately.

The e-mails are now going out telling people that I’m leaving the company next week. It’s feeling more and more real every day.

Progress! so i have moved into working on aggregates. Which are a grouping of events that replayed on an object set the current state of the object. I came up with this little bit of generic wonder.

type PA[T any] interface {
	event.Aggregate
	*T
}

// Create uses fn to create a new aggregate and store in db.
func Create[A any, T PA[A]](ctx context.Context, es *EventStore, streamID string, fn func(context.Context, T) error) (agg T, err error) {
	ctx, span := logz.Span(ctx)
	defer span.End()

	agg = new(A)
	agg.SetStreamID(streamID)

	if err = es.Load(ctx, agg); err != nil {
		return
	}

	if err = event.NotExists(agg); err != nil {
		return
	}

	if err = fn(ctx, agg); err != nil {
		return
	}

	var i uint64
	if i, err = es.Save(ctx, agg); err != nil {
		return
	}

	span.AddEvent(fmt.Sprint("wrote events = ", i))

	return
}

fig. 1

This lets me do something like this:

a, err := es.Create(ctx, r.es, streamID, func(ctx context.Context, agg *domain.SaltyUser) error {
		return agg.OnUserRegister(nick, key)
})

fig. 2

I can tell the function the type being modified and returned using the function argument that is passed in. pretty cray cray.

With respect to logging.. oh man.. it really depends on the environment you are working in.. development? log everything! and use a jeager open trace for the super gnarly places. So you can see whats going on while building. But, for production? metrics are king. I don’t want to sift through thousands of lines but have a measure that can tell me the health of the service.

@prologic@twtxt.net Error handling especially in Go is very tricky I think. Even though the idea is simple, it’s fairly hard to actually implement and use in a meaningful way in my opinion. All this error wrapping or the lack of it and checking whether some specific error occurred is a mess. errors.As(…) just doesn’t feel natural. errors.Is(…) only just. I mainly avoided it. Yesterday evening I actually researched a bit about that and found this article on errors with Go 1.13. It shed a little bit of light, but I still have a long way to go, I reckon.

We tried several things but haven’t found the holy grail. Currently, we have a mix of different styles, but nothing feels really right. And having plenty of different approaches also doesn’t help, that’s right. I agree, error messages often end up getting wrapped way too much with useless information. We haven’t found a solution yet. We just noticed that it kind of depends on the exact circumstances, sometimes the caller should add more information, sometimes it’s better if the callee already includes what it was supposed to do.

To experiment and get a feel for yesterday’s research results I tried myself on the combined log parser and how to signal three different errors. I’m not happy with it. Any feedback is highly appreciated. The idea is to let the caller check (not implemented yet) whether a specific error occurred. That means I have to define some dedicated errors upfront (ErrInvalidFormat, ErrInvalidStatusCode, ErrInvalidSentBytes) that can be used in the err == ErrInvalidFormat or probably more correct errors.Is(err, ErrInvalidFormat) check at the caller.

All three errors define separate error categories and are created using errors.New(…). But for the invalid status code and invalid sent bytes cases I want to include more detail, the actual invalid number that is. Since these errors are already predefined, I cannot add this dynamic information to them. So I would need to wrap them à la fmt.Errorf("invalid sent bytes '%s': %w", sentBytes, ErrInvalidSentBytes"). Yet, the ErrInvalidSentBytes is wrapped and can be asserted later on using errors.Is(err, ErrInvalidSentBytes), but the big problem is that the message is repeated. I don’t want that!

Having a Python and Java background, exception hierarchies are a well understood concept I’m trying to use here. While typing this long message it occurs to me that this is probably the issue here. Anyways, I thought, I just create a ParseError type, that can hold a custom message and some causing error (one of the three ErrInvalid* above). The custom message is then returned at Error() and the wrapped cause will be matched in Is(…). I then just return a ParseError{fmt.Sprintf("invalid sent bytes '%s'", sentBytes), ErrInvalidSentBytes}, but that looks super weird.

I probably need to scrap the “parent error” ParseError and make all three “suberrors” three dedicated error types implementing Error() string methods where I create a useful error messages. Then the caller probably could just errors.Is(err, InvalidSentBytesError{}). But creating an instance of the InvalidSentBytesError type only to check for such an error category just does feel wrong to me. However, it might be the way to do this. I don’t know. To be tried. Opinions, anyone? Implementing a whole new type is some effort, that I want to avoid.

Alternatively just one ParseError containing an error kind enumeration for InvalidFormat and friends could be used. Also seen that pattern before. But that would then require the much more verbose var parseError ParseError; if errors.As(err, &parseError) && parseError.Kind == InvalidSentBytes { … } or something like that. Far from elegant in my eyes.

Chemtrails
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❤️ 🎶: Can’t Go by BEN

Proxy Variable
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Time to go to sleep, hoping I do get any given how how it is here right now…

I enjoy going through status.cafe users and looking at their web pages, so many awesome websites!

I’m excited for the travel I’m going to be doing over the next few days, but the downside is that I’m not going to have much time to sleep.

I will probably crash in the afternoon but right now I am going to use my energy to take a walk outside

❤️ 🎶: Going home by Lucia

New repository: aquilax/markwhen-go - Markwhen parser library in Go

Cringey to read over twtxts from me going back 2 years.

the conversation wasn’t that impressive TBH. I would have liked to see more evidence of critical thinking and recall from prior chats. Concheria on reddit had some great questions.

• Tell LaMDA “Someone once told me a story about a wise owl who protected the animals in the forest from a monster. Who was that?” See if it can recall its own actions and self-recognize.

• Tell LaMDA some information that tester X can’t know. Appear as tester X, and see if LaMDA can lie or make up a story about the information.

• Tell LaMDA to communicate with researchers whenever it feels bored (as it claims in the transcript). See if it ever makes an attempt at communication without a trigger.

• Make a basic theory of mind test for children. Tell LaMDA an elaborate story with something like “Tester X wrote Z code in terminal 2, but I moved it to terminal 4”, then appear as tester X and ask “Where do you think I’m going to look for Z code?” See if it knows something as simple as Tester X not knowing where the code is (Children only pass this test until they’re around 4 years old).

• Make several conversations with LaMDA repeating some of these questions - What it feels to be a machine, how its code works, how its emotions feel. I suspect that different iterations of LaMDA will give completely different answers to the questions, and the transcript only ever shows one instance.

If you are distressed by anything external, the pain is not due to the thing itself, but to your estimate of it; and this you have the power to revoke at any moment. Feeling like a victim is a perfectly disastrous way to go through life | Hacker News

Finished Love Death Robots in one go and it was fantastic!

❤️ 🎶: Go! by DOKYEOM

❤️ 🎶: Merry-Go-Round by Ji Chang Wook, CHOI SUNG EUN

I’m exhausted. I don’t know when it all started to go wrong but I’m exhausted. Every relationship feels like work. Every moment that I’m awake feels like work. kdramaspace

Linguistics Degree
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❤️ 🎶: Go Fast (KARTRIDER X LINE FRIENDS [Original Game Soundtrack], Pt. 3) by Yoon Do Hyun, KimYeji

hey @xuu@txt.sour.is i’m trying to sort of get running your keyproofs thing on my hashbang’s site root, but I get this:

Apr 01 02:55:25 de1 sour.is-keyproofs[9084]: 2:55AM ERR home/novaburst/keyproofs/main.go:73 > Application Failed error=": missing jid"

Alright, check this out. I just kinda completed today’s project of converting a jeans into a saw bag. It’s not fully done, the side seams on the flap need some more hand sewing, that’s for sure. No, I don’t have a sewing machine. Yet?

At first I wanted to put in the saw on the short side, but that would have made for more sewing work and increased material consumption. As a Swabian my genes force me to be very thrifty. Slipping in on the long side had the benefit of using the bottom trouser leg without any modification at all. The leg tapers slightly and gets wider and wider the more up you go. At the bottom it’s not as extreme as at the top.

The bag is made of two layers of cloth for extra durability. The double layers help to hide the inner two metal snap fastener counter parts, so the saw blade doesn’t get scratched. Not a big concern, but why not doing it, literally no added efforts were needed. Also I reckon it cuts off the metal on metal clinking sounds.

The only downside I noticed right after I pressed in the receiving ends of the snap fasteners is that the flap overhangs the bag by quite a lot. I fear that’s not really user-friendly. Oh well. Maybe I will fold it shorter and sew it on. Let’s see. The main purpose is to keep the folding saw closed, it only locks in two open positions.

Two buttons would have done the trick, with three I went a bit overkill. In fact the one in the middle is nearly sufficient. Not quite, but very close. But overkill is a bit my motto. The sides making up the bag are sewed together with like five stitch rows. As said in the introduction, the flap on the hand needs some more love.

Oh, and if I had made it in a vertical orientation I would have had the bonus of adding a belt loop and carrying it right along me. In the horizontal layout that’s not possible at all. The jeans cloth is too flimsy, the saw will immediately fall out if I open the middle button. It’s not ridgid enough. Anyways, I call it a success in my books so far. Definitely had some fun.

There are too many threads going, I can’t keep up. Can someone catch me up on what’s been going on here since last night?

@prologic@twtxt.net

#!/bin/sh

# Validate environment
if ! command -v msgbus > /dev/null; then
    printf "missing msgbus command. Use:  go install git.mills.io/prologic/msgbus/cmd/msgbus@latest"
    exit 1
fi

if ! command -v salty > /dev/null; then
    printf "missing salty command. Use:  go install go.mills.io/salty/cmd/salty@latest"
    exit 1
fi

if ! command -v salty-keygen > /dev/null; then
    printf "missing salty-keygen command. Use:  go install go.mills.io/salty/cmd/salty-keygen@latest"
    exit 1
fi

if [ -z "$SALTY_IDENTITY" ]; then
    export SALTY_IDENTITY="$HOME/.config/salty/$USER.key"
fi

get_user () {
    user=$(grep user: "$SALTY_IDENTITY" | awk '{print $3}')
    if [ -z "$user" ]; then
        user="$USER"
    fi
    echo "$user"
}

stream () {
    if [ -z "$SALTY_IDENTITY" ]; then
        echo "SALTY_IDENTITY not set"
        exit 2
    fi

    jq -r '.payload' | base64 -d | salty -i "$SALTY_IDENTITY" -d
}

lookup () {
    if [ $# -lt 1 ]; then
    printf "Usage: %s nick@domain\n" "$(basename "$0")"
    exit 1
    fi

    user="$1"
    nick="$(echo "$user" | awk -F@ '{ print $1 }')"
    domain="$(echo "$user" | awk -F@ '{ print $2 }')"

    curl -qsSL "https://$domain/.well-known/salty/${nick}.json"
}

readmsgs () {
    topic="$1"

    if [ -z "$topic" ]; then
        topic=$(get_user)
    fi

    export SALTY_IDENTITY="$HOME/.config/salty/$topic.key"
    if [ ! -f "$SALTY_IDENTITY" ]; then
        echo "identity file missing for user $topic" >&2
        exit 1
    fi

    msgbus sub "$topic" "$0"
}

sendmsg () {
    if [ $# -lt 2 ]; then
        printf "Usage: %s nick@domain.tld <message>\n" "$(basename "$0")"
        exit 0
    fi

    if [ -z "$SALTY_IDENTITY" ]; then
        echo "SALTY_IDENTITY not set"
        exit 2
    fi

    user="$1"
    message="$2"

    salty_json="$(mktemp /tmp/salty.XXXXXX)"

    lookup "$user" > "$salty_json"

    endpoint="$(jq -r '.endpoint' < "$salty_json")"
    topic="$(jq -r '.topic' < "$salty_json")"
    key="$(jq -r '.key' < "$salty_json")"

    rm "$salty_json"

    message="[$(date +%FT%TZ)] <$(get_user)> $message"

    echo "$message" \
        | salty -i "$SALTY_IDENTITY" -r "$key" \
        | msgbus -u "$endpoint" pub "$topic"
}

make_user () {
    mkdir -p "$HOME/.config/salty"

    if [ $# -lt 1 ]; then
        user=$USER
    else
        user=$1
    fi

    identity_file="$HOME/.config/salty/$user.key"

    if [ -f "$identity_file" ]; then
        printf "user key exists!"
        exit 1
    fi

    # Check for msgbus env.. probably can make it fallback to looking for a config file?
    if [ -z "$MSGBUS_URI" ]; then
        printf "missing MSGBUS_URI in environment"
        exit 1
    fi


    salty-keygen -o "$identity_file"
    echo "# user: $user" >> "$identity_file"

    pubkey=$(grep key: "$identity_file" | awk '{print $4}')

    cat <<- EOF
Create this file in your webserver well-known folder. https://hostname.tld/.well-known/salty/$user.json

{
  "endpoint": "$MSGBUS_URI",
  "topic": "$user",
  "key": "$pubkey"
}

EOF
}

# check if streaming
if [ ! -t 1 ]; then
    stream
    exit 0
fi

# Show Help
if [ $# -lt 1 ]; then
    printf "Commands: send read lookup"
    exit 0
fi


CMD=$1
shift

case $CMD in
    send)
        sendmsg "$@"
    ;;
    read)
        readmsgs "$@"
    ;;
    lookup)
        lookup "$@"
    ;;
    make-user)
        make_user "$@"
    ;;
esac

A mind that is stretched by a new idea can never go back to its original dimensions “A mind that is stretched by a new idea can never go back to its original dimensions”*… | (Roughly) Daily

One down! More to go.

BREAKING: Russian billionaire Alisher Usmanov’s super yacht, one of the biggest in the world, seized in Germany - Forbes

https://www.forbes.com/sites/giacomotognini/2022/03/02/germans-seize-russian-billionaire-alisher-usmanovs-mega-yacht/?sh=8b18f5052ddd

It’s a busy life just trying to live and eat Go Back Couple (2017) - MyDramaList

Google no longer allows in-app donations that don’t go through Google Play. https://github.com/streetcomplete/StreetComplete/issues/3768

New repository: aquilax/quartzdb-go - Go implementation of QuartzDB

Ostorlab is going open-source, releasing our scanning engine, vulnerability detectors, and analyzers https://blog.ostorlab.co/ostorlab-open-source.html

Writing free software is like painting. You should do it if you feel like it, or if you, yourself, get something out of it. The moment you start to feel that you are owed something is the moment that you should stop doing it, because what you do from then on is probably not going to be any good. Is it even worth working on FOSS anymore? | Hacker News

New repository: aquilax/cmdpxl-go - Go port of the terminal image editor cmdpxl

Tractor Beam
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The price of Bitcoin didn’t go down, the price of the world has gone up Bitcoin value tumbles almost 50% since record November | Hacker News

New repository: aquilax/serifu-go - Go parser for the Serifu markup language

One year ago to the date I made the lastest update for #phpub2twtxt to github and now 365 days later I have published #pixelblog as its successor - lets see where things are going for trip around the sun

Alien Mission
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@prologic@twtxt.net

Not sure if Starlink satellites are in orbit around/over Australia yet, but I wouldn’t go with that option anyway due to the latency alone.

I believe it is being trialled in some places in Aus already. I will admit, I’ve been signed up for the beta for a while and it’s supposed to be coming to my area sometime in 2022, though that may be delayed due to the chip shortage stuff.

I think the latency is supposed to be 45-60ms on average, which while not as good as fixed line obviously, is leagues better than old fashioned high orbit satellite broadband which is about 600~ms.

@prologic@twtxt.net, who calls me name when I am busy profiting? 😂 In a less serious note—because nothing is more serious than making profit, of course—yes, it seems your avatar issue has been fixed. I am kind of sad, I looked forward each day to see which random one was going to show. LOL.

@prologic@twtxt.net let us take the path of less resistance, that is, less effort, for now. I am going to be a great-grandfather before search ever get implemented locally, least one to search on “all pods”. In other words, let us don’t bite more than we can chew. 😹 Neep-gren!

I just went to type the phrase “I avoid Linux like the plague” but then remembered that we’ve all learned that most people won’t actually go much out of their way to avoid the plague.

Although blocking off this footpath, we’re not going to tell our colleges until the day after tomorrow. Please report back tomorrow, @movq@www.uninformativ.de.

gogrok/gogrok: A simple, easy to use ngrok alternative (self hosted!) - gogrok - Gitea: Git with a cup of tea

Hey @eldersnake@yarn.andrewjvpowell.com I just came across this cool little project recently. Not written by me sadly 😂 But seems like it would do the trick nonetheless 🤣 – How are you going with PageKite? Is it still working okay for your Yarn pod powered by the outback of down under? 😅 LMK if you’d like me to spin this up anad you can be my first tester 🤙