I’m trying to understand how data types work in Teal. As I see, Int is represented with big endian to uint64. For example, if my argument string is “1”, btoi opcode converts it to 49. The problem I faced is checking AssetID in the Smart Contract. From this example https://github.com/algorand/smart-…

Let’s see: $ cat btoi.teal byte "1" btoi int 49 == byte "123" btoi int 0x313233 == && byte 0xffff btoi int 65535 == && $ cat comp.sh #!/bin/bash gcmd="~/n_test1/goal -d ~/n_test1/data_testnet" CONTRACT_ADDR=`eval $gcmd clerk compile btoi.teal | awk '{ print $2 }'` echo "Contract address: $CONTRAC…

OK. That completely makes sense. But my question was from the example above. How do you assert that AssetID sent from atomic transfer equals to AssetID you saved in the beginning. XferAsset returns int 1, not byte… so can’t use btoi… gtxn 1 XferAsset // 1 load 11 //49 ==

If the Application Arg is given as byte when calling the app, then btoi converts to uint64, ans XferAsset also gives back uint64. --app-arg strings Args to encode for application transactions (all will be encoded to a byte slice). For ints, use the form 'int:1234'. For raw bytes, use the…

Right, thanks! I think know the issue. The code I’m debugging creates Stateful contract from SDK. Thus, passing args like this: appArgs.push(new Uint8Array(Buffer.from("myString"))); appArgs.push(new Uint8Array(Buffer.from(assetID.toString()))); This makes AssetID arg in Teal as byte and 1 become…

Make sure you have 1.9.1 of the SDK. This was recently updated with the new encodeUint64 function.

Byte to int (vice versa) conversion and comparison in Teal

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pagito May 13, 2021, 2:16pm 7

Awesome! thanks. Updating SDK from 1.8.1 to 1.9.1 solved the issue with the encodeUint64 function.

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Byte to int (vice versa) conversion and comparison in Teal

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