Reader9

u/Reader9@programming.dev
19 posts · 137 comments

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If you’re willing to try Aliexpress, Convoy offers a cheap twistable AAA light with a basic low CRI emitter in three color temps for under $10. It’s better than other twist lights I’ve used like because both “on” and “off” are tightly secured to the body so the light won’t fall apart or turn itself on.

Moisture could be a problem, found this manufacturer faq:

Energizer Non-Rechargeable Batteries: Frequently Asked Questions Is it a good idea to store batteries in a refrigerator or freezer? No, storage in a refrigerator or freezer is not required or recommended for batteries produced today. Cold temperature storage can in fact harm batteries if condensation results in corroded contacts or label or seal damage due to extreme temperature storage

Simon mentioned these represent 3 lights, hopefully including a single-cell mechanical switch light. There appears to be one e-switch single-cell with charging, and unclear if the 2-cell has tail, electronic, or both.

on Best Pocket Throwers? · c/flashlight · 5 pts · 2y

This s6 config is awesome value and I don’t think you’ll be disappointed, especially running in 18350 mode.

Found this beamshot on the other site but I can also say from personal experience that theres a nicely defined hotspot for a tube light.

on Best Pocket Throwers? · c/flashlight · 2 pts · 2y

I also still like the older Thrunite catapult v1 which preceded Wurkkos’s ts11. It has reasonable output and good runtime for its size, but ts11 can be found for cheaper and has anduril and aux with a possibly slightly worse driver.

on Best Pocket Throwers? · c/flashlight · 3 pts · 2y

How about Mankerlight MC13 II with SBT90.2 ($110 USD) emitter or sft40 ($65)?

http://mankerlight.com/mankerlight-mc13-ii-90-2/

It’s a larger 18350 light that twists open to 18650. The TIR is similar to Thrunite Catapult v1 and possibly Wurkkos ts11.

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A 21700 tube was also released as part of a bundle or here: https://www.killzoneflashlights.com/products/manker-21700-tube-for-mc13-ii-e14-iv.

I don’t have this light but it seems like OK value for the higher price (for very short bursts of throw, not sustained).

on Lemmy 0.19 updates · c/programming · 22 pts · 2y

Time zones are an endless source of frustration, this one doesn’t sound too bad though:

Going forward, all timestamps in the API are switching from timestamps without time zone (2023-09-27T12:29:59.113132) to ISO8601 timestamps (e.g. 2023-10-29T15:10:51.557399+01:00 or Z suffix). In order to be compatible with both 0.18 and 0.19, parse the timestamp as ISO8601 and add a Z suffix if it fails (for older versions).

https://github.com/LemmyNet/lemmy/pull/3496

Olight Obulb looks good for kids. Max 55 lumens and sustains close to that for 3 hours (review), waterproof and with a kid-friendly appearance. $20 on amazon currently.

These don’t provide much illumination but the Niteize rechargeable glow sticks are good kid lights too.

I can see why this data structure might be abused and/or chosen for an inappropriate use-case since it seems to offer a lot of value for the tiny amount of space required.

if you need to know a key is definitely in that space. You still have to perform the lookup.

This is a good description. I think the name “filter” is appropriate for their best use cases, when you want to remove members of some other set if they are probably members of the bloom filter set, and can accept that you might remove some extras due to false positives.

Problems like that come up from time-to-time.

This data structure uses a 2-dimensional array to store data, documented in this scala implementation: https://github.com/twitter/algebird/blob/develop/algebird-core/src/main/scala/com/twitter/algebird/CountMinSketch.scala. I’m still trying to understand it as well.

Similar to your idea, I had thought that by using k bloom filters, each with their own hash function and bit array, one could store an approximate count up to k for each key, which also might be wasteful or a naïve solution.

PDF link: http://www.eecs.harvard.edu/~michaelm/CS222/countmin.pdf

Been looking for a primary source but the manual doesn’t specifically mention candle mode, only tactical strobe

  • Tactical strobe Disorienting strobe light. Can be used to irritate people. Speed is configurable, and the duty cycle is always 33%. Be careful about heat in this mode, if using it for a long time.

And then other places people mention this also applies to candle mode (like this BLF post).