samlewis

9 ms·

1.
How we see groups in design(canva.dev)
3 points by samlewis 2y ago|0 comments
2.
by samlewis 5y ago
Shameless plug but I was also interested in the magic behind these mesh networking tools, so I wrote my own toy version that was very much inspired by the tools you mentioned. I blogged about it here: https://www.samlewis.me&#x2F
3.
How do Mesh VPNs work? Writing my own VPN tool in Golang to find out(samlewis.me)
4 points by samlewis 5y ago|0 comments
4.
Creating a mesh VPN tool for fun and learning(samlewis.me)
2 points by samlewis 5y ago|0 comments
5.
by samlewis 5y ago
Shameless self-promotion but there's also this post I wrote in 2017 if anyone interested in a slightly different take (but a very similar write up to the OP): https://www.samlewis.me/2017/06/a-peek-under-bitco
6.
by samlewis 7y ago
Really awesome, how long did it take you to put together?
7.
by samlewis 8y ago
Last time I tried this, I found a lot of corporate spam filters seemed to (silently) drop my emails, so I went back to using GMail out of frustration. Is there anything you do that helps with this? I was using GApps and I don't think m
8.
by samlewis 8y ago
Seems like a very appropriate use of technology to me? If they can get "good enough" results using Linux and running with technologies that the average developer is more likely to know, is it worth the investment in running a RTOS
9.
by samlewis 8y ago
Asking out of mostly ignorance, but is Qt still relevant in 2018? I've noticed that even for standalone graphical applications, it's becoming more and more common to use webapps - either served locally and accessed through a brows
10.
by samlewis 9y ago
http://jrnl.sh/ is nice The low amount effort to add an entry allows me to jot down thoughts, conversations etc easily which makes me actually do it. Having it save as a plain .txt file is nice for versioning/backup as
11.
by samlewis 9y ago
That was a really fun to read, well written piece. Definitely makes me interested in trying something like this - does anyone know of any other games that have similar economy aspects?
12.
by samlewis 9y ago
Am I missing something or is the next step going to be Intel making ME impossible to remove without bricking your CPU? If so, seems like these efforts are fairly futile if they'll only work for the current gen of processors.
13.
by samlewis 9y ago
If you're a large enterprise, paying an extra $20/month could definitely be worth not having the pain & cost of having your employees having to manage paying an extra bill each month.
14.
by samlewis 9y ago
This should be really easily if you use gstreamer pipelines. Something like this: # To send gst-launch filesrc location=file.wav ! wavparse ! audioconvert ! audio/x-raw-int,channels=1,depth=16,width=16,rate=44100 ! rtpL16pay ! ud
15.
by samlewis 9y ago
GitHub Pages with a static site generator and Travis CI is superb. I have my blog [0] setup so that all I need to do in order to publish a new article is add a markdown file to my GitHub pages source repo. Travis then builds the html and pu
16.
by samlewis 9y ago
If you're interested in the nitty gritty of the mechanics of Bitcoin, check out my blog post: http://www.samlewis.me/2017/06/a-peek-under-bitcoins-hood/
17.
by samlewis 9y ago
This is really cool! It'd be even more awesome if there was a permalink so I could save/share my results.
18.
by samlewis 9y ago
Theres a number of DNS seed servers that are hard coded into the Bitcoin core codebase. A Bitcoin client does a nslookup on these seeds to find intial peers to connect to and bootstraps this way. For a bit more detail and if you're int
19.
by samlewis 9y ago
Ah, my bad. Sorry if I was being condescending in my previous reply then. I suspect it was a design decision, yeah. If outputs could be spent multiple times then you'd need to traverse the chain of outputs backwards to see how much an
20.
by samlewis 9y ago
It has to do with the way transactions and the blockchain ledger works, reread the transaction part of the article and it might make more sense. Basically, transaction outputs can either be spent or unspent, you can't half spend an out
21.
by samlewis 9y ago
No promises but I was actually considering having a crack at this as my next project. stay tuned!
22.
by samlewis 9y ago
My intention in using "hand crafted"/memorable private keys was just to make the article and what I was doing easier to follow. I don't think there's any harm in people copying and pasting examples, it only becomes
23.
by samlewis 9y ago
Oops, you are correct. Good pick up, I'll get to changing that!
24.
by samlewis 9y ago
I did deliberately leave that there in the hope someone might take it using what they'd learnt from the article. there's a short note about this in the conclusion to the article. From the "non whole" fee amount it looks
25.
A peek under Bitcoin’s hood: Writing a client that can create a transaction(samlewis.me)
241 points by samlewis 9y ago|63 comments
26.
by samlewis 9y ago
But with the changing nature of computer programming, arguably programming becomes more efficient and needs less manpower. It's easy to see that programming a web app today takes less man hours than it would've if you were to try
27.
by samlewis 9y ago
If you don't reuse Bitcoin addresses, then your Bitcoin will be safe. Bitcoin public keys aren't revealed until they're used to sign a transaction. An address is the SHA256 hash of the public key and SHA256 is quantum safe. T
28.
by samlewis 9y ago
You can margin trade on exchanges like Poloniex right now. Whether or not it's a bright idea is another matter. Even if you assume that it's presently overvalued, how can you know when (or even if) the bubble will pop?
29.
by samlewis 10y ago
What software do you use to analyze call graphs?
30.
by samlewis 10y ago
In the embedded/IoT world, I'm fairly excited about two upcoming RTOS's: mynewt ( http://mynewt.apache.org/ ) and Zephyr ( https://www.zephyrproject.org/ ).

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