[Go] How do I query the balance of an ERC20 Contract?

Using the Casper Golang SDK, you can query an ERC-20 contract for an account’s balance quickly and easily:

// Import the Casper Golang SDK.
package main

import (
    "fmt"
    "github.com/casper-ecosystem/casper-golang-sdk/contract"
    "github.com/casper-ecosystem/casper-golang-sdk/utils"
)

func main() {
    // Initialize a new client instance with the node URL.
    client := contract.NewClient("http://localhost:11101")

    // Define the contract hash and account address.
    contractHash := utils.MustDecodeBase16("hash0123456789abcdef")
    accountAddress := utils.MustDecodeBase16("account-hash0123456789abcdef")

    // Define the function arguments.
    args := &contract.ContractCallArgs{
        EntryPoint: "balance_of",
        Args:       []interface{}{accountAddress},
    }

    // Call the smart contract's balance_of function with the specified arguments.
    result, err := client.CallContract(contractHash, args)
    if err != nil {
        // Log any errors to the console.
        fmt.Printf("Error: %v", err)
        return
    }

    // Save the result to a key in local storage.
    fmt.Println(result.AsString())
}

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