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package hotline
import "io"
// readFrom is a shared helper for types that implement io.Reader via an
// offset-based copy from a serialized byte slice. It copies bytes from data
// starting at *offset into p, advances *offset, and returns io.EOF when done.
func readFrom(p []byte, offset *int, data []byte) (int, error) {
if *offset >= len(data) {
return 0, io.EOF
}
n := copy(p, data[*offset:])
*offset += n
return n, nil
}
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