Hey guys! I’m trying to understand some of the PyTEAL functions better. According to the docs , the Btoi() function returns a uint64. My question is: What would happen if one passed the bytes of a number with more than 21 digits (greater than 2^64) to Btoi? Would the transaction be automatically re…

None of these options can easily be decoded using TEAL. What you need to do is encode the number in big endian: note = (123).to_bytes(8,'big') Note that in the future, you may consider following the draft ARC: ARCs/arc-0002.md at main · algorandfoundation/ARCs · GitHub and prefix your note with m…

Your example will not work because Btoi does not convert a string representing a number. It takes as input a byte array representing a 64-bit number in big endian. See How to convert "1" to 1 in Teal? - #2 by fabrice and Endianness - Wikipedia

Is there an easier way to pass a number through the “note” field of a transaction? Like is this the best one can do: note = '123'.encode() I found another way to pass a note as a message pack, but I’m not sure if that makes TEAL conversion easier import base64 from algosdk import encoding note =…

Great work on those conventions! They sound like an excellent idea! My only worry with following them is that they’ll complicate Btoi(txn.note()) operations. Bringing this full circle to my original question, what would happen if I set note = (123456789098765432100112).to_bytes(8,"big") and then…

You can use the subtring opcodes to parse the note and remove the prefix. btoi panic if the input is too long: [image] Opcodes - Algorand Developer Portal This means that the smart contract fails.

Limits on Btoi() in PyTEAL

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danger_dave July 15, 2021, 2:05pm 7

Thank you so much! That was extremely helpful!

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Limits on Btoi() in PyTEAL

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