I need a lock like this to prevent my hyper active toddler from leaving the house through the front door.
It'll be strange to replace my front door with a guillotine slider, but I'm willing to try about anything since I found him half a block away playing in a puddle last week.
I literally just tried to send one text message. Poof he was gone.
Thanks for the tip. I just ordered some. I'm worried this style won't work for my front door, unless I can mount it above the door. I have a fiberglass double door...
You could just install one of those chain things so the door won’t open more than inch. The toddler isn’t tall enough to reach it. There’s non chain ones too, you see them in hotels, a little metal thing you flap open.
That would certainly be an easy off-the-shelf solution... Although if the door opens a crack, that also means a reckless toddler (is there any other kind?) could slam it on their own fingers.
There are some which are just hinged metal that can lock at a right-angle, one of those would give tighter no-finger-gap tolerances, while also being structurally weaker in case of emergency.
You're fortunate! Deadbolts are no match for our 22 month old... He already figured out how to disarm three types of safety latches, and he's halfway to opening the safety gates.
I don't want to show him too much television, but it's the only thing that keeps him in one place
Poseidon currently runs a desal plant in Carlsbad. My understanding is that the water the plant releases into the ocean requires exemptions for how concentrated it is. Additionally, the plant draws plankton filled water. Not really what we want in California.
There are better desal solutions out there like OceanWell. They have a deep water desalination solution that solves many of the problems of conventional desal. They just signed a project in Nice, France in the past few days. Also, they are working with the city of Las Virgines over the past few years.
If I remember correctly, the new desal plant in Doheny has a slightly different approach to draw water in from beneath the sand, using the sand as a prefilter. But I'm not sure how that works better than drawing water in from near the surface. I can't imagine how the plankton can possibly escape the suction forces drawing them into the sand.
I wasn't aware of the Doheny project, thanks! But it seems that that project timeline is at least as long as the one CCC killed.
With these kinds of timelines and that kind of regulatory risk, I don't think large-scale desalination is going to fix California's drought issues, regardless of whether it could.
It would be a more interesting challenge if the data file were larger than the memory. I would love to see what people would come up with on some baby vm with 512 mb of ram.
Even more interesting would be small ram, little local storage and a large file only available via network, I would like to see something other than http but realistically it would be http.
As the file-memory ratio changes the problem becomes more and more stream processing, right? If the number of cities becomes too much to keep in memory then it becomes a database with "let's see who can find a better index data structure fitting for these I/O patterns and HW" game.
Right, it's the five times in a row thing that makes an in-memory solution faster. Otherwise, this is a purely sequential one-pass problem, which is how you'd do it in practice.
Parallelism with edge effects is pretty common. Weather simulation, finite element analysis, and big-world games all have that issue. The middle of each cell is local, but you have to talk to the neighbor cells a little.
You wouldn't want to do this for a huge file. A very fast solution would use a small number of buffers and io_uring (or equivalent), keeping the page table and cache footprint small.
Yeah so I had a discussion on Twitter about this, turns out 12GB is small enough to fit into memory, and the author runs submissions by running a solution 5 times in a row, so using direct IO actually hurts because having the kernel cache is a way to enforce the file is in memory for the 4 runs after. I have a direct IO solution with SIMD string search and double parsing, just in C++ (using libraries). It runs in 6 seconds on my 24 core linux box (NVMe).
In case you haven't noticed yet, the input format guarantees exactly one fractional digit, so you can read a single signed integer followed by `.` and one digit instead.
Yeah I missed this originally, and stuff could be faster with this assumption without a full double parser. The fastest java solution dies some near branchless decoding for these
So you are basically at the mercy of the OS caching algorithm. That sounds like a bad plan for a benchmark. You are not measuring what you think you are (your code), you are measuring the OS caching policy.
Dumb question. With io_uring, how do you handle lines that straddle between chunks? I'm asking since, AFAIU, the submitted requests are not guaranteed to be completed in order.
(The easiest I can think of is submitting reads for "overlapped" chunks, I'm not sure there is an easier way and I'm not sure of how much performance overhead there is to it.)
What is the downside of memory mapping in this scenario? Shouldn't the page table properly handle the case of doing a single sequential read over a range of pages? Accessing the contents of a file doesn't seem like something caching would matter for. Do you mean that reading of sequential pages will keep adding to the cache compared to reading from a single page? That seems like a similar thing as before where they will be the first things gone from the cache anyways.
Caching and paging almost always matter, even on things like this. The core problem is that the filesystem won't prefetch for you, and you will be waiting to page fault several times over the length of the file. Another problem of the size of the working set is that you will be seeing several slow calls to (essentially) malloc in the kernel to hold all of that data, while using a small, preallocated structure will give you none of that trouble.
Sure, but no one was arguing that ought to have been legal or that the phone system would be in the wrong to attempt to patch exploits found by hacking.
Their Blue Box efforts were very cool! So is the coding that let Beeper do this.
But it is mystifying to me that people are arguing it is illegitimate (under our current system) for Apple to try to secure its system.
The irony is people are rooting for a company (Apple) which only exists because it did something similar like Beeper early on, but root against Beeper. Apple is its present and history.
Aluminum was once rare too. It was considered a precious metal. The obelisk at the Washington Memorial is capped with Aluminum... I've heard stories that it was used for engagement rings in that era as well!
Yes! The movie is a good one. My wife enjoyed it and she doesn't know anything about pinball. There's a little love story woven in. Highly recommend it.
Get new machines if you can afford them. Stern or Jersey Jack.
90s machines are great, I love them, but they are 30 years old and are not where I recommend anyone to start... My first pin was a fixer upper Twilight Zone. Learn from my mistake! Haha
The most challenging part is the maintenance, especially the classics. Owning several machines taught me to fix them. My newer machines broke less often...
Every time I threw a decent party I'd end up buying minimum $200 in parts and spending half a day fixing them.
Lord of the Rings is one of my all time favorites. I highly recommend it. It's not ancient, and the game is really deep. It's pretty easy to work on and fix. Make sure you protect the plastics, I couldn't find after market ones. The Wizard mode is extremely satisfying because it is super difficult to achieve... There are a couple fun special modes you can unlock.
On modern solid state pins, you can adjust the difficulty settings to make the game more fun for friends.
Thanks for the great advice. LotR is actually my single favorite pinball game and I've played it a ton, mostly at Pinball Pete's in Ann Arbor. But, I've played it so much that I would probably get bored of it quickly if I purchased it. Twilight Zone is great too! I'm in Seattle now, and so lots of places have the new Foo Fighters pin which I'm enjoying a lot.
> he said he’d been walking around the world all this time and as soon as he clicked with people, he’d always be saying goodbye.
I feel the same way when I take my little vacations... I meet amazing people, connect, and then move on. There is a beauty to it though. I really try to enjoy those moments. They are so brief.
This was a touching story, especially the fact that the dog he rescued might be the first dog to have walked around the world!
In elementary school, around 2nd grade, I attended a talk by Dave Kunst, the first man to walk around the globe. I'm surprised the Guardian didn't mention him. His story has often surfaced in my memory. I never had the guts to do anything remotely so adventurous... and he did it in the very wild 1970s. Around the same time my mother hitchhiked from South America to the US.
Dave told us he searched for sponsors before embarking on his trip, but no one would take him seriously. Not even shoe companies!
He walked to the edge of each continent, to dip his toes in the ocean at the start and end of each continent to make sure he was going as far as possible. I think there were a handful of countries he wasn't able to pass through for some reason or another.
Dave's brother was killed on the journey by thugs who thought Dave and his brother were personally taking donations and carrying the money. He said he came to peace with his brother's murder because he died doing what he loved. If I remember correctly, another brother joined Dave to complete the trip. In all his journey took around four years. About half the time it took Tom.
He closed the talk by showing us all photos of his last pair of shoes after he had completed his trip, and then a photo of his bare feet -- and we all screamed in disgust!
It'll be strange to replace my front door with a guillotine slider, but I'm willing to try about anything since I found him half a block away playing in a puddle last week.
I literally just tried to send one text message. Poof he was gone.