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Standard library · easy

17. Files and io Interfaces

Reader and Writer everywhere.

1 min read2 questionsup to 50 XPtopic 17/50

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io.Reader and io.Writer are the universal streaming interfaces, so files, network connections, buffers and compressors all compose. os opens files, bufio buffers them, and io.Copy moves data without loading everything into memory.

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Check your understanding

  1. 1. Which pair of interfaces underpins Go streaming?

  2. 2. io.Copy is useful because it…

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