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53 lines
2.5 KiB
Markdown
53 lines
2.5 KiB
Markdown
# 附録B: 勘誤
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**p.9, ¶2:** for "can compared", read "can be compared".
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(Thanks to Antonio Macías Ojeda, 2015-10-22.)
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**p.13:** As printed, the <code>gopl.io/ch1/lissajous</code> program
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is deterministic, not random. We've added the statement below to
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the downloadable program so that it prints a pseudo-random image
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each time it is run. (Thanks to Randall McPherson, 2015-10-19.)
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`rand.Seed(time.Now().UTC().UnixNano())`
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**p.19, ¶2:** For "Go's libraries makes", read "Go's library makes". (Thanks to Victor Farazdagi, 2015-11-30.)
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**p.40, ¶1:** The paragraph should end with a period, not a comma. (Thanks to Victor Farazdagi, 2015-11-30.)
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**p.43, ¶3:** Import declarations are explained in §10.4, not §10.3. (Thanks to Peter Jurgensen, 2015-11-21.)
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**p.52, ¶2:** for "an synonym", read "a synonym", twice.
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**p.68:** the table of UTF-8 encodings is missing a bit from each first byte.
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The corrected table is shown below. (Thanks to Akshay Kumar, 2015-11-02.)
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```
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0xxxxxxx runes 0?127 (ASCII)
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110xxxxx 10xxxxxx 128?2047 (values <128 unused)
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1110xxxx 10xxxxxx 10xxxxxx 2048?65535 (values <2048 unused)
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11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 65536?0x10ffff (other values unused)
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```
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**p.74:** the comment in <code>gopl.io/ch3/printints</code> should say
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`fmt.Sprint`, not `fmt.Sprintf`.
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**p.76:** the comment `// "time.Duration 5ms0s` should have a closing double-quotation mark.
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**p.79, ¶4:** "When an untyped constant is
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assigned to a variable, as in the first statement below, or
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appears on the right-hand side of a variable declaration with an
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explicit type, as in the other three statements, ..." has it backwards:
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the <i>first</i>
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statement is a declaration; the other three are assignments.
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(Thanks to Yoshiki Shibata, 2015-11-09.)
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**p.132, code display following ¶3:** the final comment should read:
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`// compile error: can't assign func(int, int) int to func(int) int`
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(Thanks to Toni Suter, 2015-11-21.)
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**p.166, ¶2:** for "way", read "a way".
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**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.) |