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43 lines
1.1 KiB
Markdown
Vendored
43 lines
1.1 KiB
Markdown
Vendored
# bufpipe: Buffered Pipe
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[![CircleCI](https://img.shields.io/circleci/build/github/acomagu/bufpipe.svg?style=flat-square)](https://circleci.com/gh/acomagu/bufpipe) [![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg?style=flat-square)](https://godoc.org/github.com/acomagu/bufpipe)
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The buffered version of io.Pipe. It's safe for concurrent use.
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## How does it differ from io.Pipe?
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Writes never block because the pipe has variable-sized buffer.
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```Go
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r, w := bufpipe.New(nil)
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io.WriteString(w, "abc") // No blocking.
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io.WriteString(w, "def") // No blocking, too.
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w.Close()
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io.Copy(os.Stdout, r)
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// Output: abcdef
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```
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[Playground](https://play.golang.org/p/PdyBAS3pVob)
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## How does it differ from bytes.Buffer?
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Reads block if the internal buffer is empty until the writer is closed.
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```Go
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r, w := bufpipe.New(nil)
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done := make(chan struct{})
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go func() {
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io.Copy(os.Stdout, r) // The reads block until the writer is closed.
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done <- struct{}{}
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}()
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io.WriteString(w, "abc")
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io.WriteString(w, "def")
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w.Close()
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<-done
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// Output: abcdef
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```
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[Playground](https://play.golang.org/p/UppmyLeRgX6)
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