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https://github.com/golang/go
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spec: update spacing to match gofmt, where reasonable.
R=gri, rsc CC=golang-dev https://golang.org/cl/5327053
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doc/go_spec.html
136
doc/go_spec.html
@ -912,9 +912,9 @@ in a struct type:
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<pre>
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struct {
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T // conflicts with anonymous field *T and *P.T
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*T // conflicts with anonymous field T and *P.T
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*P.T // conflicts with anonymous field T and *T
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T // conflicts with anonymous field *T and *P.T
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*T // conflicts with anonymous field T and *P.T
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*P.T // conflicts with anonymous field T and *T
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}
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</pre>
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@ -974,7 +974,7 @@ BaseType = Type .
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<pre>
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*int
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*map[string] *chan int
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*map[string]*chan int
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</pre>
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<h3 id="Function_types">Function types</h3>
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@ -1153,9 +1153,9 @@ failure will cause a <a href="#Run_time_panics">run-time panic</a>.
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</p>
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<pre>
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map [string] int
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map [*T] struct { x, y float64 }
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map [string] interface {}
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map[string]int
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map[*T]struct{ x, y float64 }
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map[string]interface{}
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</pre>
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<p>
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@ -1174,8 +1174,8 @@ which takes the map type and an optional capacity hint as arguments:
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</p>
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<pre>
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make(map[string] int)
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make(map[string] int, 100)
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make(map[string]int)
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make(map[string]int, 100)
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</pre>
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<p>
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@ -1207,9 +1207,9 @@ A channel may be constrained only to send or only to receive by
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</p>
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<pre>
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chan T // can be used to send and receive values of type T
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chan<- float64 // can only be used to send float64s
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<-chan int // can only be used to receive ints
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chan T // can be used to send and receive values of type T
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chan<- float64 // can only be used to send float64s
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<-chan int // can only be used to receive ints
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</pre>
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<p>
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@ -1218,9 +1218,9 @@ possible:
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</p>
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<pre>
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chan<- chan int // same as chan<- (chan int)
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chan<- <-chan int // same as chan<- (<-chan int)
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<-chan <-chan int // same as <-chan (<-chan int)
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chan<- chan int // same as chan<- (chan int)
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chan<- <-chan int // same as chan<- (<-chan int)
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<-chan <-chan int // same as <-chan (<-chan int)
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chan (<-chan int)
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</pre>
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@ -1306,8 +1306,8 @@ Given the declarations
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type (
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T0 []string
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T1 []string
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T2 struct { a, b int }
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T3 struct { a, c int }
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T2 struct{ a, b int }
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T3 struct{ a, c int }
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T4 func(int, float64) *T0
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T5 func(x int, y float64) *[]string
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)
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@ -1320,7 +1320,7 @@ these types are identical:
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<pre>
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T0 and T0
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[]int and []int
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struct { a, b *T5 } and struct { a, b *T5 }
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struct{ a, b *T5 } and struct{ a, b *T5 }
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func(x int, y float64) *[]string and func(int, float64) (result *[]string)
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</pre>
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@ -1564,10 +1564,10 @@ constant, even if the literal's fractional part is zero.
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<pre>
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const Pi float64 = 3.14159265358979323846
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const zero = 0.0 // untyped floating-point constant
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const zero = 0.0 // untyped floating-point constant
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const (
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size int64 = 1024
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eof = -1 // untyped integer constant
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eof = -1 // untyped integer constant
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)
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const a, b, c = 3, 4, "foo" // a = 3, b = 4, c = "foo", untyped integer and string constants
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const u, v float32 = 0, 3 // u = 0.0, v = 3.0
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@ -1639,10 +1639,10 @@ it is only incremented after each ConstSpec:
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<pre>
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const (
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bit0, mask0 = 1 << iota, 1 << iota - 1 // bit0 == 1, mask0 == 0
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bit1, mask1 // bit1 == 2, mask1 == 1
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_, _ // skips iota == 2
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bit3, mask3 // bit3 == 8, mask3 == 7
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bit0, mask0 = 1 << iota, 1<<iota - 1 // bit0 == 1, mask0 == 0
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bit1, mask1 // bit1 == 2, mask1 == 1
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_, _ // skips iota == 2
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bit3, mask3 // bit3 == 8, mask3 == 7
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)
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</pre>
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@ -1670,7 +1670,7 @@ TypeSpec = identifier Type .
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type IntArray [16]int
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type (
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Point struct { x, y float64 }
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Point struct{ x, y float64 }
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Polar Point
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)
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@ -1753,7 +1753,7 @@ var U, V, W float64
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var k = 0
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var x, y float32 = -1, -2
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var (
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i int
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i int
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u, v, s = 2.0, 3.0, "bar"
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)
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var re, im = complexSqrt(-1)
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@ -2090,9 +2090,9 @@ to the maximum element index plus one.
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</p>
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<pre>
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buffer := [10]string{} // len(buffer) == 10
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intSet := [6]int{1, 2, 3, 5} // len(intSet) == 6
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days := [...]string{"Sat", "Sun"} // len(days) == 2
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buffer := [10]string{} // len(buffer) == 10
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intSet := [6]int{1, 2, 3, 5} // len(intSet) == 6
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days := [...]string{"Sat", "Sun"} // len(days) == 2
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</pre>
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<p>
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@ -2331,13 +2331,13 @@ one may write:
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</p>
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<pre>
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p.z // (*p).z
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p.y // ((*p).T1).y
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p.x // (*(*p).T0).x
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p.z // (*p).z
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p.y // ((*p).T1).y
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p.x // (*(*p).T0).x
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p.M2 // (*p).M2
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p.M1 // ((*p).T1).M1
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p.M0 // ((*p).T0).M0
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p.M2 // (*p).M2
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p.M1 // ((*p).T1).M1
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p.M0 // ((*p).T0).M0
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</pre>
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@ -2476,9 +2476,9 @@ sliced operand:
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</p>
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<pre>
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a[2:] // same a[2 : len(a)]
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a[:3] // same as a[0 : 3]
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a[:] // same as a[0 : len(a)]
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a[2:] // same a[2 : len(a)]
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a[:3] // same as a[0 : 3]
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a[:] // same as a[0 : len(a)]
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</pre>
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<p>
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@ -2571,7 +2571,7 @@ the method.
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</p>
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<pre>
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math.Atan2(x, y) // function call
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math.Atan2(x, y) // function call
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var pt *Point
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pt.Scale(3.5) // method call with receiver pt
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</pre>
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@ -3091,7 +3091,7 @@ Consider a struct type <code>T</code> with two methods,
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type T struct {
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a int
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}
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func (tv T) Mv(a int) int { return 0 } // value receiver
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func (tv T) Mv(a int) int { return 0 } // value receiver
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func (tp *T) Mp(f float32) float32 { return 1 } // pointer receiver
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var t T
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</pre>
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@ -3337,11 +3337,11 @@ string containing the UTF-8 representation of the integer. Values outside
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the range of valid Unicode code points are converted to <code>"\uFFFD"</code>.
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<pre>
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string('a') // "a"
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string(-1) // "\ufffd" == "\xef\xbf\xbd "
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string(0xf8) // "\u00f8" == "ø" == "\xc3\xb8"
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string('a') // "a"
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string(-1) // "\ufffd" == "\xef\xbf\xbd "
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string(0xf8) // "\u00f8" == "ø" == "\xc3\xb8"
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type MyString string
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MyString(0x65e5) // "\u65e5" == "日" == "\xe6\x97\xa5"
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MyString(0x65e5) // "\u65e5" == "日" == "\xe6\x97\xa5"
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</pre>
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</li>
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@ -3351,7 +3351,7 @@ a string whose successive bytes are the elements of the slice. If
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the slice value is <code>nil</code>, the result is the empty string.
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<pre>
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string([]byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}) // "hellø"
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string([]byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}) // "hellø"
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type MyBytes []byte
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string(MyBytes{'h', 'e', 'l', 'l', '\xc3', '\xb8'}) // "hellø"
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@ -3365,7 +3365,7 @@ converted to strings. If the slice value is <code>nil</code>, the
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result is the empty string.
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<pre>
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string([]rune{0x767d, 0x9d6c, 0x7fd4}) // "\u767d\u9d6c\u7fd4" == "白鵬翔"
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string([]rune{0x767d, 0x9d6c, 0x7fd4}) // "\u767d\u9d6c\u7fd4" == "白鵬翔"
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type MyRunes []rune
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string(MyRunes{0x767d, 0x9d6c, 0x7fd4}) // "\u767d\u9d6c\u7fd4" == "白鵬翔"
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@ -3378,8 +3378,8 @@ yields a slice whose successive elements are the bytes of the string.
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If the string is empty, the result is <code>[]byte(nil)</code>.
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<pre>
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[]byte("hellø") // []byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}
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MyBytes("hellø") // []byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}
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[]byte("hellø") // []byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}
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MyBytes("hellø") // []byte{'h', 'e', 'l', 'l', '\xc3', '\xb8'}
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</pre>
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</li>
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@ -3473,11 +3473,11 @@ of the constant type. The following constant expressions are illegal:
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</p>
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<pre>
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uint(-1) // -1 cannot be represented as a uint
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int(3.14) // 3.14 cannot be represented as an int
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int64(Huge) // 1<<100 cannot be represented as an int64
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Four * 300 // 300 cannot be represented as an int8
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Four * 100 // 400 cannot be represented as an int8
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uint(-1) // -1 cannot be represented as a uint
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int(3.14) // 3.14 cannot be represented as an int
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int64(Huge) // 1<<100 cannot be represented as an int64
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Four * 300 // 300 cannot be represented as an int8
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Four * 100 // 400 cannot be represented as an int8
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</pre>
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<p>
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@ -3487,11 +3487,11 @@ and -1 for signed and untyped constants.
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</p>
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<pre>
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^1 // untyped integer constant, equal to -2
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uint8(^1) // error, same as uint8(-2), out of range
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^uint8(1) // typed uint8 constant, same as 0xFF ^ uint8(1) = uint8(0xFE)
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int8(^1) // same as int8(-2)
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^int8(1) // same as -1 ^ int8(1) = -2
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^1 // untyped integer constant, equal to -2
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uint8(^1) // error, same as uint8(-2), out of range
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^uint8(1) // typed uint8 constant, same as 0xFF ^ uint8(1) = uint8(0xFE)
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int8(^1) // same as int8(-2)
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^int8(1) // same as -1 ^ int8(1) = -2
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</pre>
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<!--
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@ -3517,7 +3517,7 @@ order.
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For example, in the assignment
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</p>
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<pre>
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y[f()], ok = g(h(), i() + x[j()], <-c), k()
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y[f()], ok = g(h(), i()+x[j()], <-c), k()
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</pre>
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<p>
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the function calls and communication happen in the order
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@ -3732,14 +3732,14 @@ a, b = b, a // exchange a and b
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x := []int{1, 2, 3}
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i := 0
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i, x[i] = 1, 2 // set i = 1, x[0] = 2
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i, x[i] = 1, 2 // set i = 1, x[0] = 2
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i = 0
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x[i], i = 2, 1 // set x[0] = 2, i = 1
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x[0], x[0] = 1, 2 // set x[0] = 1, then x[0] = 2 (so x[0] = 2 at end)
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x[1], x[3] = 4, 5 // set x[1] = 4, then panic setting x[3] = 5.
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x[1], x[3] = 4, 5 // set x[1] = 4, then panic setting x[3] = 5.
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type Point struct { x, y int }
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var p *Point
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@ -4247,7 +4247,7 @@ for { // send random sequence of bits to c
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}
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}
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select { } // block forever
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select {} // block forever
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</pre>
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@ -4644,10 +4644,10 @@ is negative or larger than <code>m</code>, or if <code>n</code> or
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</p>
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<pre>
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s := make([]int, 10, 100) // slice with len(s) == 10, cap(s) == 100
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s := make([]int, 10) // slice with len(s) == cap(s) == 10
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c := make(chan int, 10) // channel with a buffer size of 10
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m := make(map[string] int, 100) // map with initial space for 100 elements
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s := make([]int, 10, 100) // slice with len(s) == 10, cap(s) == 100
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s := make([]int, 10) // slice with len(s) == cap(s) == 10
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c := make(chan int, 10) // channel with a buffer size of 10
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m := make(map[string]int, 100) // map with initial space for 100 elements
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</pre>
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@ -4693,7 +4693,7 @@ var t []interface{}
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t = append(t, 42, 3.1415, "foo") t == []interface{}{42, 3.1415, "foo"}
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var b []byte
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b = append(b, "bar"...) // append string contents b == []byte{'b', 'a', 'r' }
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b = append(b, "bar"...) // append string contents b == []byte{'b', 'a', 'r' }
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</pre>
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<p>
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@ -5008,7 +5008,7 @@ func generate(ch chan<- int) {
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// Copy the values from channel 'src' to channel 'dst',
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// removing those divisible by 'prime'.
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func filter(src <-chan int, dst chan<- int, prime int) {
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for i := range src { // Loop over values received from 'src'.
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for i := range src { // Loop over values received from 'src'.
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if i%prime != 0 {
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dst <- i // Send 'i' to channel 'dst'.
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}
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