diff options
Diffstat (limited to 'src/pkg/bufio/example_test.go')
-rw-r--r-- | src/pkg/bufio/example_test.go | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/src/pkg/bufio/example_test.go b/src/pkg/bufio/example_test.go deleted file mode 100644 index 3da914142..000000000 --- a/src/pkg/bufio/example_test.go +++ /dev/null @@ -1,82 +0,0 @@ -// Copyright 2013 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package bufio_test - -import ( - "bufio" - "fmt" - "os" - "strconv" - "strings" -) - -func ExampleWriter() { - w := bufio.NewWriter(os.Stdout) - fmt.Fprint(w, "Hello, ") - fmt.Fprint(w, "world!") - w.Flush() // Don't forget to flush! - // Output: Hello, world! -} - -// The simplest use of a Scanner, to read standard input as a set of lines. -func ExampleScanner_lines() { - scanner := bufio.NewScanner(os.Stdin) - for scanner.Scan() { - fmt.Println(scanner.Text()) // Println will add back the final '\n' - } - if err := scanner.Err(); err != nil { - fmt.Fprintln(os.Stderr, "reading standard input:", err) - } -} - -// Use a Scanner to implement a simple word-count utility by scanning the -// input as a sequence of space-delimited tokens. -func ExampleScanner_words() { - // An artificial input source. - const input = "Now is the winter of our discontent,\nMade glorious summer by this sun of York.\n" - scanner := bufio.NewScanner(strings.NewReader(input)) - // Set the split function for the scanning operation. - scanner.Split(bufio.ScanWords) - // Count the words. - count := 0 - for scanner.Scan() { - count++ - } - if err := scanner.Err(); err != nil { - fmt.Fprintln(os.Stderr, "reading input:", err) - } - fmt.Printf("%d\n", count) - // Output: 15 -} - -// Use a Scanner with a custom split function (built by wrapping ScanWords) to validate -// 32-bit decimal input. -func ExampleScanner_custom() { - // An artificial input source. - const input = "1234 5678 1234567901234567890" - scanner := bufio.NewScanner(strings.NewReader(input)) - // Create a custom split function by wrapping the existing ScanWords function. - split := func(data []byte, atEOF bool) (advance int, token []byte, err error) { - advance, token, err = bufio.ScanWords(data, atEOF) - if err == nil && token != nil { - _, err = strconv.ParseInt(string(token), 10, 32) - } - return - } - // Set the split function for the scanning operation. - scanner.Split(split) - // Validate the input - for scanner.Scan() { - fmt.Printf("%s\n", scanner.Text()) - } - - if err := scanner.Err(); err != nil { - fmt.Printf("Invalid input: %s", err) - } - // Output: - // 1234 - // 5678 - // Invalid input: strconv.ParseInt: parsing "1234567901234567890": value out of range -} |