Use %p to print &wallet.Balance in pointers-and-errors.md
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After the Stringer interface is implemented `%v` will no longer print the memory address but instead will invoke the Stringer interface which is confusing. Using `%p` means it will consistently print the variable's memory address.
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After the Stringer interface is implemented
%vwill no longer print the memory address but instead will invoke the Stringer interface which is confusing.Using
%pmeans it will consistently print the variable's memory address.