#go encode uint64 as ergument

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twilit quiver
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In go-algorand-sdk, how do I encode uint64 as an argument to bytes?

brave pollenBOT
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Hi @twilit quiver. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

#

To encode a uint64 as an argument in bytes using the Go Algorand SDK, you can use the binary.BigEndian.PutUint64() function. Here's how you can do it:

encodedArg := make([]byte, 8)
binary.BigEndian.PutUint64(encodedArg, 123)

This code snippet creates a byte slice of length 8 (since uint64 is 8 bytes long) and then uses binary.BigEndian.PutUint64() to encode the uint64 value (in this case, 123) into the byte slice in big-endian format.

You can then use this encoded argument when creating a LogicSigAccount, like this:

lsigWithArgs := crypto.LogicSigAccount{
    Lsig: types.LogicSig{Logic: lsigBinary, Args: [][]byte{encodedArg}},
}

This approach is consistent with Algorand's requirement that parameters to a smart signature TEAL program be in byte arrays, as mentioned in the Passing parameters using the SDKs documentation.

Go-Algorand-SDK Examples provides this exact example for encoding a uint64 argument.

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