udhos/golang Io.Reader.md

## golang Io.Reader.md

      
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              golang Io.Reader.md
            
          
    type Reader struct {
    data []byte
    readIndex int64
}

func (r *Reader) Read(p []byte) (n int, err error) {
    if r.readIndex >= int64(len(r.data)) {
        err = io.EOF
        return
    }

    n = copy(p, r.data[r.readIndex:])
    r.readIndex += int64(n)
    return
}

https://stackoverflow.com/questions/28174970/implementing-reader-interface