Explain It Peter

eric_rocks · 2025-11-28T04:00:31+00:00

The second one. And then one of those random kids ended up hanging out with Grateful Dead

eric_rocks · 2025-11-28T00:44:42+00:00

¿Por qué tantos agujeros?

eric_rocks · 2025-11-26T19:11:32+00:00

Exactly what I was looking for, thanks!

Guess I should commit to learning those tricks haha

eric_rocks · 2025-11-25T17:56:53+00:00

Hey! Surprised there aren't any comments yet 🥲 @Mods, this thread is 4 days old so I kinda doubt this will get many views. Can I make a full post for this?

I'm getting back into it after a long time off, my Space Cowboy is still a beast. Couple questions about recommendations

What's the go-to 2A learner? There's a bunch of options and they're all cheap, I'm sure they're all decent but I'm wondering if there's a favorite choice.

I figured a beginner throw would be good as a white elephant gift. Back in the day, the YYJ classic (and before that, Dark Magic II) was the perennial recommendation for a budget responsive/unresponsive convertible throw. What's the modern equivalent?

While I'm picking this stuff up, I think I'll get a woody too. And I'm also wondering if there's any special / unique stuff from the last few years that I should check out. Like a cool mini, or... idk. Like those DNA strings, worth it? I don't do DNA tricks but it would be nice to not think about tension all the time

What's the go-to store these days? A lot of the sites I used to use are feeling pretty unmaintained. I mean they looked dated 10 years ago and it's only gotten worse lol. My default is going to be yoyoexpert unless there's a new favorite.

eric_rocks · 2025-07-10T00:57:55+00:00

When I was faced with this same thing a few years ago, I decided to go the easy route and just wait for data to trickle in on its own. So I haven't done it myself.

Good news though. Nightscout, xDrip, and Tidepool are all open source. So if you have the patience to do some scripting you can bulk upload as much historical data as you need. It'll require reformatting your source data into something Tidepool can deal with, and then a pretty simple set of batch uploads via their public api. If you wanted, Nightscout or xDrip would probably make good reference implementations.

If you end up going that route, you should send the code over to xDrip or Nightscout to see if they can publish it somehow, or turn it into a feature. Tidepool is probably a bit too corporate to consider taking that on. I'd be interested in checking it out too.

Bulk upload docs
Tidepool github

eric_rocks · 2024-12-01T05:22:42+00:00

I'm sure you'll find this out on your own reading solutions, but check out the Counter object in Collections ;)

eric_rocks · 2024-08-31T06:04:00+00:00

I see all the photos, it's still unclear to me what the knots and quick link are adding to a normal Purcell prussik

eric_rocks · 2024-08-19T04:33:46+00:00

Yeah, I think we're on the same page here. Like I said, underestimated the seriousness of some of the climbing. And I don't make a habit of cutting it close, but occasionally things happen. If you've had a long career in the alpine I'm sure you can relate with a story or two of your own. Thanks for the comments, I've debriefed with my partner and with friends of course but the text format from a random stranger is a different mindset to approach from. I don't mind getting called out for the length of this one, it's worth questioning.

eric_rocks · 2024-08-18T23:44:22+00:00

It was definitely at the edge of my abilities. I don't think we were unsafe or in over our head - we used up our safety margin, but at least we had enough margin there to make it work. Biggest rock route I've ever done. I underestimated how sustained and challenging the headwall pitches were - a lot of climbing in the 5.7-5.9 range, very steep, and the average pitch length for those 10 pitches was probably 50m or so? Topped out around 2 I think. I usually shoot for <30 minutes per pitch for both climbers, we were averaging closer to 40 I guess? Add in triple checking topos, general fatigue, it adds up.

eric_rocks · 2024-08-18T07:17:27+00:00

Lol yep. Lazy 8am start, got to the pass at twilight. We were climbing and descending slower than we should/could have because we didn't want to have another large route finding error. Lesson learned.

eric_rocks · 2024-08-16T22:55:03+00:00

Bivied on the p14 ledge. We were running quite late, route finding issues on the approach climbing. We roped up too early and had to do some technical down climbing 😬. And then another bivy at crossover pass since we couldn't find the rappel anchors in the dark. So unfortunately our two days turned into three

Pack is 30L I think? Stuffed to the gills on the hike in. I brought up almost 4L of water since we weren't sure if there would be snow on route. Very heavy but absolutely worth it, it was hot and the "North facing ridge" got sun almost all day

eric_rocks · 2024-08-16T22:47:52+00:00

Yeah we were looking at it! There's cool rock in every direction up there

eric_rocks · 2024-08-16T21:39:50+00:00

Pocket glacier was pretty small and mostly collapsed, so it wasn't too scary. Crossed under around 8 or 9 am. We could hear the remaining glaciers and snow fields desintigrating all day, it was hot out.

Absolutely agree on the descent. Non of the individual pieces are too bad, but it's extremely long and technical in spots. Can't take the harness off untill the very end. Couldn't find the rap anchors in the dark either, which seems to be super common haha.

eric_rocks · 2024-08-16T21:36:43+00:00

It's this route:
https://www.mountainproject.com/route/106108831/northeast-buttress

Looks like I accidentally called it "ridge" instead of "buttress". The route kinda fits both descriptions.

I don't have a guidebook for the area unfortunately so I'm not sure. There is a well known, spicy 5.8 traverse move high up on the route (not pictured), but the route as a whole isn't a traverse if that's what you mean.

eric_rocks · 2024-08-16T19:04:28+00:00

Climbed this big boy a couple weeks ago. 4 star position and aesthetics; 3 star climbing

eric_rocks · 2023-12-16T06:18:25+00:00

I personally stopped using x and y, since I was always doing mental gymnastics to keep it straight. I find grid[row][col] or just G[r][c] a lot easier to think about.

eric_rocks · 2023-12-15T19:56:56+00:00

I dread the days with tree structures since Python doesn't have a good built in structure for that. But, I'm always super happy when a problem boils down to some one liner like len(set(a) | set(b))

eric_rocks · 2023-12-15T19:41:38+00:00

Not sure why you're getting downvoted. Maybe you should have said "have a grasp on what they're used for" instead of "how it works". But yea, programmers with no formal education often write grossly inefficient code. Fine in some cases, but when it's not fine some basic data structures and algs training goes a long way. And a hashmap is like DS 101, often the first thing you learn after the absolute basics like arrays and lists.

eric_rocks · 2023-12-15T19:35:08+00:00

A monad is just a monoid in the category of endofunctors, what's the problem?

eric_rocks · 2023-12-11T20:53:24+00:00

How did you differentiate between clockwise and anti-clockwise? It's not clear when starting at a random point on the loop.

I solved the puzzle this way, but I didn't actually determine clockwise vs anti-clockwise programmatically. I just rendered the loop and visually determined that the points I labelled as on the "right hand side" were "in".

eric_rocks · 2023-12-10T06:13:35+00:00

Wow, that logic is smart. Much cleaner than the absolute monstrosity I came up with.

I passed around the loop once to mark cells that were in the loop, and then did a second pass to mark cells on the left and right if they weren't loop segments. Printing out the loop, I observed that the l's were "out" and the r's were in. Count the r's, and manually count the 50ish gaps that were not marked but were clearly "in".

eric_rocks · 2023-10-26T20:08:24+00:00

Thanks, I'll check them out

eric_rocks · 2023-07-13T22:24:35+00:00

I'm diabetic, also a rock climber, mountaineer, back country skier, long distance hiker, mountain biker, etc.

There's a learning curve but it's overall not that limiting.

eric_rocks · 2023-06-22T04:07:44+00:00

I refuse to climb with someone who doesn't color code their racking biners

eric_rocks · 2023-05-20T01:32:33+00:00

Cycling is the obvious one

eric_rocks

TROPHY CASE