K-Means Clustering
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K-Means Clustering
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so in effect it would look something like this:

---
subject: acct:me@sour.is
aliases:
  - salty:me@sour.is
  - yarn:xuu@ev.sour.is
  - status:xuu@chaos.social
  - mailto:me@sour.is
---
subject: salty:me@sour.is
aliases:
  - acct:me@sour.is
links:
  - rel:    self
    type:   application/json+salty
    href:   https://ev.sour.is/inbox/01GAEMKXYJ4857JQP1MJGD61Z5
    properties:
        "http://salty.im/ns/nick":    xuu
        "http://salty.im/ns/display": Jon Lundy
        "http://salty.im/ns/pubkey":     kex140fwaena9t0mrgnjeare5zuknmmvl0vc7agqy5yr938vusxfh9ys34vd2p
---
subject: yarn:xuu@ev.sour.is
links:
  - rel: https://txt.sour.is/user/xuu
    properties:
        "https://sour.is/rel/redirect": https://txt.sour.is/.well-known/webfinger?resource=acct%3Axuu%40txt.sour.is
---    
subject: status:xuu@chaos.social
links:
   - rel: http://joinmastodon.org#xuu%40chaos.social
     properties:
        "https://sour.is/rel/redirect": https://chaos.social/.well-known/webfinger?resource=acct%3Axuu%40chaos.social
---
subject: mailto:me@sour.is
...

@prologic@twtxt.net That was exactly my thought at first too. but what do we put as the rel for salty account? since it is decentralized we dont have a set URL for machines to key off. so for example take the standard response from okta:

# http GET https://example.okta.com/.well-known/webfinger  resource==acct:bob
{
    "links": [
        {
            "href": "https://example.okta.com/sso/idps/OKTA?login_hint=bob#",
            "properties": {
                "okta:idp:type": "OKTA"
            },
            "rel": "http://openid.net/specs/connect/1.0/issuer",
            "titles": {
                "und": "example"
            }
        }
    ],
    "subject": "acct:bob"
}

It gives one link that follows the OpenID login. So the details are specific to the subject acct:bob.

Mastodons response:

{
  "subject": "acct:xuu@chaos.social",
  "aliases": [
    "https://chaos.social/@xuu",
    "https://chaos.social/users/xuu"
  ],
  "links": [
    {
      "rel": "http://webfinger.net/rel/profile-page",
      "type": "text/html",
      "href": "https://chaos.social/@xuu"
    },
    {
      "rel": "self",
      "type": "application/activity+json",
      "href": "https://chaos.social/users/xuu"
    },
    {
      "rel": "http://ostatus.org/schema/1.0/subscribe"
    }
  ]
}

it supplies a profile page and a self which are both specific to that account.

@abucci@anthony.buc.ci did you know about the chip inside USB-C cables?

https://connectorsupplier.com/usb-type-c-what-you-need-to-know/

some groups have created their own chips that have hidden keyloggers that can phone home over network connections.

https://shop.hak5.org/products/omg-cable

PEP 702: Marking deprecations using the type system
This PEP adds an @typing.deprecated() decorator that marks a class or function as deprecated, enabling static checkers to warn when it is used. ⌘ Read more

https://enneagram.bz/fr/types/all #writing #character building

@prologic@twtxt.net see where its used maybe that can help.
https://github.com/sour-is/ev/blob/main/app/peerfinder/http.go#L153

This is an upsert. So I pass a streamID which is like a globally unique id for the object. And then see how the type of the parameter in the function is used to infer the generic type. In the function it will create a new *Info and populate it from the datastore to pass to the function. The func will do its modifications and if it returns a nil error it will commit the changes.

The PA type contract ensures that the type fulfills the Aggregate interface and is a pointer to type at compile time.

one that i think is pretty interesting is building up dependent constraints. see here.. it accepts a type but requires the use of a pointer to type.

https://github.com/sour-is/ev/blob/main/pkg/es/es.go#L315-L325

Ignite Realtime Blog: Spark 3.0.1 Released
The Ignite Realtime community is happy to announce the release of Spark 3.0.1 version.

This release contains mostly fixes. macOS now uses the default FlatLaf LaF. The user can also choose the type of tabs “scroll” as in Spark 3.0.0 or “wrap” as in Spark 2.X. See screenshot below. And also for some users, Spark not saved history.

Image

Hold up now, that example hash doesn’t have a $ prefix!

Well for this there is the option for a hash type to set itself as a fall through if a matching hash doesn’t exist. This is good for legacy password types that don’t follow the convention.

func (p *plainPasswd) ApplyPasswd(passwd *passwd.Passwd) {
	passwd.Register("plain", p)
	passwd.SetFallthrough(p)
}

https://github.com/sour-is/go-passwd/blob/main/passwd_test.go#L28-L31

Here is an example of usage:

func Example() {
	pass := "my_pass"
	hash := "my_pass"

	pwd := passwd.New(
		&unix.MD5{}, // first is preferred type.
		&plainPasswd{},
	)

	_, err := pwd.Passwd(pass, hash)
	if err != nil {
		fmt.Println("fail: ", err)
	}

	// Check if we want to update.
	if !pwd.IsPreferred(hash) {
		newHash, err := pwd.Passwd(pass, "")
		if err != nil {
			fmt.Println("fail: ", err)
		}

		fmt.Println("new hash:", newHash)
	}

	// Output:
	//  new hash: $1$81ed91e1131a3a5a50d8a68e8ef85fa0
}

This shows how one would set a preferred hashing type and if the current version of ones password is not the preferred type updates it to enhance the security of the hashed password when someone logs in.

https://github.com/sour-is/go-passwd/blob/main/passwd_test.go#L33-L59

I made a thing. Its a multi password type checker. Using the PHC string format we can identify a password hashing format from the prefix $name$ and then dispatch the hashing or checking to its specific format.

@carsten@yarn.zn80.net what type of NAS? I just upgraded my oooold (~2008) Drobo to a Synology. I have been impressed with all the neat stuff it can do.

Announcing Docker Hub OCI Artifacts Support
We’re excited to announce that Docker Hub can now help you distribute any type of application artifact! You can now keep everything in one place without having to leverage multiple registries. Before today, you could only use Docker Hub to store and distribute container images — or artifacts usable by container runtimes. This became a […] ⌘ Read more

The Myers–Briggs Type Indicator problem ⌘ Read more

💻 Issue 335 - The case against Effect Systems (e.g., the IO data type) ⌘ Read more

Gajim: Gajim 1.5.2
Gajim 1.5.2 brings another performance boost, better emojis, improvements for group chat moderators, and many bug fixes. Thank you for all your contributions!

Generating performance profiles for Gajim revealed some bottlenecks in Gajim’s code. After fixing these, switching chats should now feel snappier than before.

Did you know that you can use shortcodes for typing emojis? Typing :+1 for example will ope … ⌘ Read more

Convert HEIC to JPG in Go
The “High Efficiency Image File Format” or HEIF is an image format often used by Apple devices. Although called HEIF, the file types are often heic ( presumably the ‘c’ stands for container?)
They use a similar encoding method of video formats and are deemed
better quality and lower file size than standard jpeg files. 1 points posted by Edd Turtle ⌘ Read more

Look, sir, I know Angua. She’s not the useless type. She doesn’t stand there and scream helplessly. She makes other people do that Look, sir, I know Angua. She’s not the useless… - Quotes from Terry Pratchett’s Discworld Books

[Raku] 以自定型別來解 Fizz Buzz ⌘ Read more

PEP 698: Override Decorator for Static Typing
This PEP proposes adding an @override decorator to the Python type system. This will allow type checkers to prevent a class of bugs that occur when a base class changes methods that are inherited by derived classes. ⌘ Read more

@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.

Huh… Nope.

HTTP/1.1 200 OK
Content-Length: 407
Content-Type: text/calendar
Access-Control-Allow-Origin: *
Access-Control-Expose-Headers: ETag
Permissions-Policy: interest-cohort=()
Content-Security-Policy: default-src 'none'; sandbox
Referrer-Policy: same-origin
Vary: Authorization


BEGIN:VCALENDAR
VERSION:2.0;2.0
PRODID:SandCal
CALSCALE:GREGORIAN
BEGIN:VEVENT
DTSTAMP:20220822T180903Z
UID:bb63bfbd-623e-4805-b11b-3181d96375e6
DTSTART;TZID=America/Chicago:20220827T000000
CREATED:20220822T180903Z
LAST-MODIFIED:20220822T180903Z
LOCATION:https://meet.jit.si/Yarn.social
SUMMARY:Yarn Call
RRULE:FREQ=WEEKLY
DTEND;TZID=America/Chicago:20220827T010000
END:VEVENT
END:VCALENDAR

@prologic@twtxt.net odd is it maybe a wrong mime type thing? Should be text/calendar. Some http servers can mistakenly mark them application/octet-stream

PEP 697: C API for Extending Opaque Types
Add limited C API for extending types whose struct is opaque, by allowing code to only deal with data specific to a particular (sub)class. ⌘ Read more

@prologic@twtxt.net correct type parameters. 😅

(cont.)

Just to give some context on some of the components around the code structure.. I wrote this up around an earlier version of aggregate code. This generic bit simplifies things by removing the need of the Crud functions for each aggregate.

A domain object can be used as an aggregate by adding the event.AggregateRoot struct and finish implementing event.Aggregate. The AggregateRoot implements logic for adding events after they are either Raised by a command or Appended by the eventstore Load or service ApplyFn methods. It also tracks the uncommitted events that are saved using the eventstore Save method.

type User struct {
  Identity string ```json:"identity"`

  CreatedAt time.Time

  event.AggregateRoot
}

// StreamID for the aggregate when stored or loaded from ES.
func (a *User) StreamID() string {
	return "user-" + a.Identity
}
// ApplyEvent to the aggregate state.
func (a *User) ApplyEvent(lis ...event.Event) {
	for _, e := range lis {
		switch e := e.(type) {
		case *UserCreated:
			a.Identity = e.Identity
			a.CreatedAt = e.EventMeta().CreatedDate
        /* ... */
		}
	}
}

Events are applied to the aggregate. They are defined by adding the event.Meta and implementing the getter/setters for event.Event

type UserCreated struct {
	eventMeta event.Meta

	Identity string
}

func (c *UserCreated) EventMeta() (m event.Meta) {
	if c != nil {
		m = c.eventMeta
	}
	return m
}
func (c *UserCreated) SetEventMeta(m event.Meta) {
	if c != nil {
		c.eventMeta = m
	}
}

With a domain object that implements the event.Aggregate the event store client can load events and apply them using the Load(ctx, agg) method.

// GetUser populates an user from event store.
func (rw *User) GetUser(ctx context.Context, userID string) (*domain.User, error) {
	user := &domain.User{Identity: userID}

	err := rw.es.Load(ctx, user)
	if err != nil {
		if err != nil {
			if errors.Is(err, eventstore.ErrStreamNotFound) {
				return user, ErrNotFound
			}
			return user, err
		}
		return nil, err
	}
	return user, err
}

An OnX command will validate the state of the domain object can have the command performed on it. If it can be applied it raises the event using event.Raise() Otherwise it returns an error.

// OnCreate raises an UserCreated event to create the user.
// Note: The handler will check that the user does not already exsist.
func (a *User) OnCreate(identity string) error {
    event.Raise(a, &UserCreated{Identity: identity})
    return nil
}

// OnScored will attempt to score a task.
// If the task is not in a Created state it will fail.
func (a *Task) OnScored(taskID string, score int64, attributes Attributes) error {
	if a.State != TaskStateCreated {
		return fmt.Errorf("task expected created, got %s", a.State)
	}
	event.Raise(a, &TaskScored{TaskID: taskID, Attributes: attributes, Score: score})
	return nil
}

The following functions in the aggregate service can be used to perform creation and updating of aggregates. The Update function will ensure the aggregate exists, where the Create is intended for non-existent aggregates. These can probably be combined into one function.

// Create is used when the stream does not yet exist.
func (rw *User) Create(
  ctx context.Context,
  identity string,
  fn func(*domain.User) error,
) (*domain.User, error) {
	session, err := rw.GetUser(ctx, identity)
	if err != nil && !errors.Is(err, ErrNotFound) {
		return nil, err
	}

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

	_, err = rw.es.Save(ctx, session)

	return session, err
}

// Update is used when the stream already exists.
func (rw *User) Update(
  ctx context.Context,
  identity string,
  fn func(*domain.User) error,
) (*domain.User, error) {
	session, err := rw.GetUser(ctx, identity)
	if err != nil {
		return nil, err
	}

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

	_, err = rw.es.Save(ctx, session)
	return session, err
}

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.

To all my feed subscribers: If you are annoyed by the TTS audio or the “Interactions” link, add a “.min” in front of the feed type in the URL. For example https://jlelse.blog/.min.rss. Thanks for following! 😄 ⌘ Read more

Hi, I am playing with making an event sourcing database. Its super alpha but I thought I would share since others are talking about databases and such.

It’s super basic. Using tidwall/wal as the disk backing. The first use case I am playing with is an implementation of msgbus. I can post events to it and read them back in reverse order.

I plan to expand it to handle other event sourcing type things like aggregates and projections.

Find it here: sour-is/ev

@prologic@twtxt.net @movq@www.uninformativ.de @lyse@lyse.isobeef.org

PEP 696: Type defaults for TypeVarLikes
This PEP introduces the concept of type defaults for TypeVarLikes (TypeVar, ParamSpec and TypeVarTuple), which act as defaults for a type parameter when none is specified. ⌘ Read more

Type-Driven Development ⌘ Read more

The Chromium super (inline cache) type confusion
In this post I’ll exploit CVE-2022-1134, a type confusion in Chrome that I reported in March 2022, which allows remote code execution (RCE) in the renderer sandbox of Chrome by a single visit to a malicious site. I’ll also look at some past vulnerabilities of this type and some implementation details of inline cache in V8, the JavaScript engine of Chrome. ⌘ Read more

No insurance payout over capsizing of Hong Kong’s Jumbo Floating Restaurant, owner says
Jumbo was insured by a type of policy that covered third-party losses instead of losses to the company, statement by Aberdeen Restaurant Enterprises says. ⌘ Read more

Great blog post. I’ve been thinking about this, just couldn’t put it into words. https://seirdy.one/posts/2022/06/25/two-types-of-privacy/

Philippines’ Duterte leaves brutal legacy in presidency marked by drug war, US-China policy flip-flops
The extrajudicial killings of some 8,000 people has ‘opened the floodgates for a type of governance that disregards the rule of law, due process and human rights’, activists say. ⌘ Read more

‘It can create life’: Chinese team claim stem cell breakthrough in mice study
Researchers say they turned one type of stem cell into another that can develop into all types in the body. ⌘ Read more

Top French court rules against burkinis in city pool
The judges blocked Grenoble’s bid to allow all types of swimwear; a change to allow women to bathe topless was not challenged. ⌘ Read more

Häagen-Dazs Hong Kong apologises after banned pesticide found in 2 types of vanilla ice cream products
Centre for Food Safety halts sale of Häagen-Dazs’ pint-sized and bulk-sized vanilla ice cream after Taiwan’s food authorities found ethylene oxide in them. ⌘ Read more

numpy.unique needs the type to be comparable by < and >, not just ==. that seems like overkill.

Masks, Covid-19 test kits, plastic bottles: more than 9,000kg of litter found on Hong Kong’s hiking trails, seashore last year, green group says
Plastic bottles, bottle lids and buoys top three types of rubbish commonly found on seashore, while cigarettes, tissue paper and food packaging dot hiking trails, green group Ecobus says. ⌘ Read more

Gajim: Gajim 1.4.4
Gajim 1.4.4 comes with many improvements: emoji auto-complete, automatic theme switching when your desktop switches from light to dark in the evening, a completely reworked Gajim remote interface, and many bug fixes.

After many emoji improvements in Gajim 1.4.3, this version comes with an emoji auto-complete while writing messages! As soon as you start typing a :, a popover will show you available emoji shortcodes, just like on Slack or Github 🎉

![Emoji auto-complete](ht … ⌘ Read more

China launches Fujian, PLA Navy’s 3rd aircraft carrier
After at least two delays, the Type 003 warship has left the Jiangnan shipyard in Shanghai, according to Chinese state media. ⌘ Read more

Chinese shipyard ready to launch Type 003 aircraft carrier, satellite images show
The dry dock has been flooded so the vessel can be floated, and banners with political slogans and flags can be seen on the warship. ⌘ Read more

Duck typing ⌘ Read more

A new “Pokemon”-type game for the Command Line
Available for Linux, Windows, and macOS. All written in Python. ⌘ Read more

Types of Scopes
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Types of Scopes
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“Typioca” - A terminal-based typing speed tester
A really, really classy looking one. ⌘ Read more