Notes

At 03:47 on the 11th of August, 2023permalink

Some lesser known nice things about Japan 🗾

Ambulances are loud, but not too loud.
When Police cars do unexpected things like making a U-turn suddenly, they politely inform everyone nearby with a megaphone.
When large vehicles make a turn near a pedestrian they play a vocal warning "Watch out! I'm about to turn left!"
Dog owners carry a bottle of water to wash away any pee the dog might do on a walk.
There are lots of outside gyms.
There are lots of summer festivals which aren't exclusively an excuse to get drunk.
Its not okay to be ugly.
- You better look your best if you're thinking about leaving your home.
- Foreigners usually get the benefit of the doubt.
Lots of stuff made in Japan for Japanese people only. (Films, cars, appliances...)
There is one and only one right way to do everything.
- If you order something in a cafe or a restaurant, chances are they'll tell you the right way to consume it.
- e.g. You order an iced coffee creamy thing from a local cafe.
  1. First taste the top and bottom layers independently before mixing them both together with the straw...
There is a lot of wildlife everywhere.
- Probably more wildlife in Tokyo than in any National park in the UK.
There are dry ice machines in some supermarkets.
Some cars have a horn? that says in a polite voice "Please watch out, a car is passing by!" to unsuspecting pedestrians that haven't noticed.
Relaxing background music automatically starts playing the instant your skin comes into contact with the toilet seat.
Safety first
- At petrol stations there is an "anti static electricity pad" for you to touch before filling up your car.
The sky is big.

At 17:18 on the 6th of March, 2023permalink

💬 https://www.tomoliver.net/notes/2023-03-03-2144

Its been a while since I did any data modelling in typescript.

TS

// An example of a user management system
// Define user status type, just an enum
type UserAccountStatus = "ACTIVE" | "DORMANT" | "DELETED"
// Define a base type
type BaseUser = { name: string; status: UserAccountStatus }
// Create concrete types using the base type
type ActiveUser = BaseUser & { status: "ACTIVE" }
type DormantUser = BaseUser & { status: "DORMANT" }
type DeletedUser = BaseUser & { status: "DELETED" }
type User = ActiveUser | DormantUser | DeletedUser
// Create the type of function we want to implement
// Make return type a promise because we talk to the DB
type DeleteUser = (user: ActiveUser | DormantUser) => Promise<DeletedUser>
// do a temporary implementation of the function
const deleteUser: DeleteUser = (user) => {
  const deletedUser: DeletedUser = { ...user, status: "DELETED" }
  // define a helper that we haven't got yet
  return writeUserToDB(deletedUser)
}
// declare the type of the helper like so:
declare function writeUserToDB<A extends User>(user: A): Promise<A>

At 22:34 on the 5th of March, 2023permalink

Bought some books with the intention of learning Chinese but yeah its pretty hard.
As long as I don't give up completely I might be ok at it in the region of say... a decade?
Which is really not too long when you think about it.
So I guess nothing to complain.