附錄A：原文勘誤 · The Go Programming Language

## 附錄A：[原文勘誤](http://www.gopl.io/errata.html) **p.9, ?2:** for "can compared", read "can be compared". (Thanks to Antonio Macías Ojeda, 2015-10-22. Corrected in the second printing.) **p.13:** As printed, the `gopl.io/ch1/lissajous` program is deterministic, not random. We've added the statement below to the downloadable program so that it prints a pseudo-random image each time it is run. (Thanks to Randall McPherson, 2015-10-19.) `rand.Seed(time.Now().UTC().UnixNano())` **p.15, ?2:** For "inner loop", read "outer loop". (Thanks to Ralph Corderoy, 2015-11-28. Corrected in the third printing.) **p.19, ?2:** For "Go's libraries makes", read "Go's library makes". (Thanks to Victor Farazdagi, 2015-11-30. Corrected in the third printing.) **p.40, ?4:** For "value of the underlying type", read "value of an unnamed type with the same underlying type". (Thanks to Carlos Romero Brox, 2015-12-19.) **p.40, ?1:** The paragraph should end with a period, not a comma. (Thanks to Victor Farazdagi, 2015-11-30. Corrected in the third printing.) **p.43, ?3:** Import declarations are explained in §10.4, not §10.3. (Thanks to Peter Jurgensen, 2015-11-21. Corrected in the third printing.) **p.48:** `f.ReadByte()` serves as an example of a reference to f, but `*os.File` has no such method. For "ReadByte", read "Stat", four times. (Thanks to Peter Olsen, 2016-01-06. Corrected in the third printing.) **p.52, ?2:** for "an synonym", read "a synonym", twice. (Corrected in the second printing.) **p.52, ?9:** for "The integer arithmetic operators", read "The arithmetic operators". (Thanks to Yoshiki Shibata, 2015-12-20.) **p.68:** the table of UTF-8 encodings is missing a bit from each first byte. The corrected table is shown below. (Thanks to Akshay Kumar, 2015-11-02. Corrected in the second printing.) ``` 0xxxxxxx runes 0?127 (ASCII) 110xxxxx 10xxxxxx 128?2047 (values <128 unused) 1110xxxx 10xxxxxx 10xxxxxx 2048?65535 (values <2048 unused) 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 65536?0x10ffff (other values unused) ``` **p.73, ?1:** For "a exercise", read "an exercise". (Thanks to vrajmohan, 2015-12-28.) **p.74:** the comment in `gopl.io/ch3/printints` should say `fmt.Sprint`, not `fmt.Sprintf`. (Corrected in the second printing.) **p.75, ?4:** for "%u", read "%o". (Thanks to William Hannish, 2015-12-21.) **p.76:** the comment `// "time.Duration 5m0s` should have a closing double-quotation mark. (Corrected in the second printing.) **p.79, ?4:** "When an untyped constant is assigned to a variable, as in the first statement below, or appears on the right-hand side of a variable declaration with an explicit type, as in the other three statements, ..." has it backwards: the <i>first</i> statement is a declaration; the other three are assignments. (Thanks to Yoshiki Shibata, 2015-11-09. Corrected in the third printing.) **p.112:** Exercise 4.11 calls for a "CRUD" (create, read, update, delete) tool for GitHub Issues. Since GitHub does not currently allow Issues to be deleted, for "delete", read "close". (Thanks to Yoshiki Shibata, 2016-01-18.) **p.115:** The anchor element in `gopl.io/ch4/issueshtml`'s template is missing a closing `</a>` tag. (Thanks to Taj Khattra, 2016-01-19.) **p.132, code display following ?3:** the final comment should read: `// compile error: can't assign func(int, int) int to func(int) int` (Thanks to Toni Suter, 2015-11-21. Corrected in the third printing.) **p.160, ?4:** `For Get("item"))`, read `Get("item")`. (Thanks to Yoshiki Shibata, 2016-02-01.) **p.166, ?2:** for "way", read "a way". (Corrected in the third printing.) **p.200, TestEval function:** the format string in the final call to t.Errorf should format test.env with %v, not %s. (Thanks to Mitsuteru Sawa, 2015-12-07. Corrected in the third printing.) **p.222, Exercise 8.1:** The port numbers for `London` and `Tokyo` should be swapped in the final command to match the earlier commands. (Thanks to Kiyoshi Kamishima, 2016-01-08.) **p.272, ?3:** for "the request body", read "the response body". (Thanks to [曹春暉](https://github.com/cch123), 2016-01-19.) **p.288, code display following ?4:** In the import declaration, for `"database/mysql"`, read `"database/sql"`. (Thanks to Jose Colon Rodriguez, 2016-01-09.) **p.347, Exercise 12.8:** for "like json.Marshal", read "like json.Unmarshal". (Thanks to [chai2010](https://github.com/chai2010), 2016-01-01.) **p.362:** the `gopl.io/ch13/bzip` program does not comply with the [proposed rules for passing pointers between Go and C code](https://github.com/golang/proposal/blob/master/design/12416-cgo-pointers.md) because the C function `bz2compress` temporarily stores a Go pointer (in) into the Go heap (the `bz_stream` variable). The `bz_stream` variable should be allocated, and explicitly freed after the call to `BZ2_bzCompressEnd`, by C functions. (Thanks to Joe Tsai, 2015-11-18. Corrected in the third printing.)