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In 3.4 you can now do

  x.map { it + 3 }.sum 
which I'm still getting used to


Even the same customer has projects with Ruby ranging from 2.7 to 3.4 so I'm using the oldest possible syntax. The changes in keyword args hit hard some projects. Luckily not the one I'm working on most of my time.


You also find `it` in Kotlin.


Was curious about what welding technique you meant, looks like it is local electron beam welding https://www.thefabricator.com/thewelder/blog/assembly/sheffi...


I work in an EB shop doing everything from welding, engineering assistance, machine repairs, and complete machine rebuilds. It's quite an impressive process and Ive had parts in my hands that come from some of the biggest names you can think of in aerospace, semiconductor, military, medical and more.


Are they for prototypes? Or how do you service production runs for parts?

If for arguments sake it were a part for an AWACS or an aircraft carrier you might only need to make eight or a dozen. But even military aircraft tend to run into the hundreds.


We do production runs with the rare service run. Most parts are one time use as you might imagine. Service work is the rare mold repair.

We are part of a few companies just in time manufacturing so they pay for expedite processing on orders as small a one piece to a few dozen. And we can get production run orders in the tens of thousands.


50 kW ebeam?


We have 7.5 kW and 15 kW machines. Smaller chambers but there's plenty of smaller work out there.


That’s it.


I've used this to draft (and build) a couple of frames. Went back to pencil and paper for the most recent framebuild.


> I've used this to draft (and build) a couple of frames.

If You still has files of some old versions of rattleCAD backuped, and it is not listed on Internet Archive[0] yet, please share it.

[0] https://archive.org/download/rattlecad



Thanks for the link. We were previously using GFNI for bit reversal and 8-bit shifts, and I just extended that to our 8-bit BroadcastSignBit (https://github.com/google/highway/pull/1784).


That's funny, I'm 41 and planning on setting up my brakeless track bike for the road again this afternoon (changing the gearing to 42-17 and switching from drops to a wide riser bar). If it goes badly I'll think of your warning.


This is a good long form SCP read: http://www.scpwiki.com/antimemetics-division-hub


At least one of the authors of that section ("qntm") has Kindle and print versions of those and other stories on Amazon (search "There Is No Antimemetics Division") if you want to support them...


I really loved reading through this one. Such a great idea for a story.


If you liked this story line, check out the author's other work on http://qntm.org.


Amazing story.


thanks for ruining my sleep schedule



I found a cure for my own lower back pain last year.

I had dealt with back pain throughout most of my 30s, and had self-diagnosed it as a bulging disc. Every few months I would lean over while brushing my teeth, or sneeze weirdly, or bend over to tie my shoes, and my lower back muscles would spasm and I'd be laid up on the couch for a week, taking muscle relaxants.

Early last year, I slowly came to realize that I had an unconscious habit of constantly holding my stomach in and tensing my abs. After unlearning this habit, my back pain is almost completely gone, and I haven't pulled a lower back muscle in about a year.


Picture the downward force generated by sitting on the bicycle causing the rear axle and bottom bracket to spread away from each other, causing the seatstays to break at the seat tube. This is what chainstays prevent on a complete frame.


Since there's no derailleur, the chain would do a good job of resisting that force (though since it's only on one side, maybe it wouldn't be enough, and the wheel/seat stays would twist)

Though when you start to pedal, the chain would tend to pull in and bend the seatstays, but there should be some level of force that is less than the opposite force caused by the rider's weight, so this bike could work under light pedal pressure.


VSTO


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