--- Log opened Tue Jan 18 00:00:33 2022
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10:39 < belcher> im trying to use "Script::from(&a_vec8)" from rust-bitcoin, cargo says "the trait `From<&Vec<u8>>` is not implemented for `bitcoin::Script`" how to fix and make it compile? cargo suggests "use std::convert::From::from;" but that doesnt work
10:56 < jeremyrubin> are you sure it takes a reference and not a clone?
10:57 < jeremyrubin> may also help to do a .into()
10:57 < jeremyrubin> lastly, i doubt From is implemented because i dont think Script can always be parsed from vec? Maybe it's a fallible API?
10:58 < jeremyrubin> yeah i only see From<Vec<u8, Global>> not reference
10:59 < belcher> haha yes found it, it takes a .clone()
10:59 < belcher> it seems i saw the error message and tried adding a & automatically
10:59 < belcher> Script::from() definitely exists, its used by rust-lightning and a few other places in rust-bitcoin
10:59 < belcher> thanks for the help!
10:59 < jeremyrubin> np
11:00 < jeremyrubin> Script::from considered unsafe :p
11:01 < belcher> where does it say that?
11:08 < jeremyrubin> it doesnt
11:09 < jeremyrubin> but you have no guarantees that you have a valid script
11:09 < jeremyrubin> it's not memeory unsafe, just api unsafe
11:09 < belcher> im obtaining it from the witness of a transaction, so i assume the bitcoin core node already did the checking.... also if it really is invalid i think nothing bad should happen (famous last words lol)
11:10 < jeremyrubin> e.g., issues you could run into: > 10k byte script, invalid pushdata fragment, unmatched if/else, etc.
11:10 < jeremyrubin> i think that's fair for that use case, idk what you wanted it for
11:11 < belcher> its doing an off-chain contract similar to LN, reading the hash preimage from the witness of a transaction, and then using that preimage to spend another utxo
11:11 < belcher> if the script is anything weird then it will detect it and return a None, and then not try to create any new transaction
11:13 < jeremyrubin> kk
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20:26 < BlueMatt[m]> Yet another rust-bitcoin project in prod - https://techcrunch.com/2022/01/18/blocks-cash-app-adopts-lightning-network-for-free-bitcoin-payments/
20:26 < BlueMatt[m]> LDK powering Cash's new Lightning feature. special thanks to the LDK contributors in here :)
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--- Log closed Wed Jan 19 00:00:34 2022