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reader.go
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/
reader.go
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package main
import (
"bytes"
"io"
"log"
)
const interfaceFormat = "%T is an %s"
func testInterfaces(buffer interface{}) {
if _, ok := buffer.(io.ByteReader); ok {
log.Printf(interfaceFormat, buffer, "io.ByteReader")
}
if _, ok := buffer.(io.ByteScanner); ok {
log.Printf(interfaceFormat, buffer, "io.ByteScanner")
}
if _, ok := buffer.(io.Closer); ok {
log.Printf(interfaceFormat, buffer, "io.Closer")
}
if _, ok := buffer.(io.LimitedReader); ok {
log.Printf(interfaceFormat, buffer, "io.LimitedReader")
}
if _, ok := buffer.(io.ReadCloser); ok {
log.Printf(interfaceFormat, buffer, "io.ReadCloser")
}
if _, ok := buffer.(io.ReadSeeker); ok {
log.Printf(interfaceFormat, buffer, "io.ReadSeeker")
}
if _, ok := buffer.(io.ReadWriteCloser); ok {
log.Printf(interfaceFormat, buffer, "io.ReadWriteCloser")
}
if _, ok := buffer.(io.ReadWriteSeeker); ok {
log.Printf(interfaceFormat, buffer, "io.ReadWriteSeeker")
}
if _, ok := buffer.(io.ReadWriter); ok {
log.Printf(interfaceFormat, buffer, "io.ReadWriter")
}
if _, ok := buffer.(io.Reader); ok {
log.Printf(interfaceFormat, buffer, "io.Reader")
}
if _, ok := buffer.(io.ReaderAt); ok {
log.Printf(interfaceFormat, buffer, "io.ReaderAt")
}
if _, ok := buffer.(io.ReaderFrom); ok {
log.Printf(interfaceFormat, buffer, "io.ReaderFrom")
}
if _, ok := buffer.(io.RuneReader); ok {
log.Printf(interfaceFormat, buffer, "io.RuneReader")
}
if _, ok := buffer.(io.RuneScanner); ok {
log.Printf(interfaceFormat, buffer, "io.RuneScanner")
}
if _, ok := buffer.(io.Seeker); ok {
log.Printf(interfaceFormat, buffer, "io.Seeker")
}
if _, ok := buffer.(io.WriteCloser); ok {
log.Printf(interfaceFormat, buffer, "io.WriteCloser")
}
if _, ok := buffer.(io.WriteSeeker); ok {
log.Printf(interfaceFormat, buffer, "io.WriteSeeker")
}
if _, ok := buffer.(io.Writer); ok {
log.Printf(interfaceFormat, buffer, "io.Writer")
}
if _, ok := buffer.(io.WriterAt); ok {
log.Printf(interfaceFormat, buffer, "io.WriterAt")
}
if _, ok := buffer.(io.WriterTo); ok {
log.Printf(interfaceFormat, buffer, "io.WriterTo")
}
}
func main() {
golang := []byte("golang")
reader := bytes.NewReader(golang)
testInterfaces(reader)
}