各位大佬，新手咨询个问题

代码如下：


type field struct {
        name string
}

data1 := []*field{{"one"}, {"two"}, {"three"}}
data2 := []field{{"four"}, {"five"}, {"six"}}

这么写可以，而data1是个指针切片，但是data1与data2中的定义是一样的，这是有啥语法糖吗？
还有就是 var d field = {"one"} 这么写就报语法错误，为啥定义切片的时候，可以直接用{"one"}代替 field实例呢。
--
FROM 114.253.36.*

Within a composite literal of array, slice, or map type T, elements or map keys that are themselves composite literals may elide the respective literal type if it is identical to the element or key type of T. Similarly, elements or keys that are addresses of composite literals may elide the &T when the element or key type is *T.

[...]Point{{1.5, -3.5}, {0, 0}}     // same as [...]Point{Point{1.5, -3.5}, Point{0, 0}}
[][]int{{1, 2, 3}, {4, 5}}          // same as [][]int{[]int{1, 2, 3}, []int{4, 5}}
[][]Point{{{0, 1}, {1, 2}}}         // same as [][]Point{[]Point{Point{0, 1}, Point{1, 2}}}
map[string]Point{"orig": {0, 0}}    // same as map[string]Point{"orig": Point{0, 0}}
map[Point]string{{0, 0}: "orig"}    // same as map[Point]string{Point{0, 0}: "orig"}

type PPoint *Point
[2]*Point{{1.5, -3.5}, {}}          // same as [2]*Point{&Point{1.5, -3.5}, &Point{}}
[2]PPoint{{1.5, -3.5}, {}}          // same as [2]PPoint{PPoint(&Point{1.5, -3.5}), PPoint(&Point{})}
A parsing ambiguity arises when a composite literal using the TypeName form of the LiteralType appears as an operand between the keyword and the opening brace of the block of an "if", "for", or "switch" statement, and the composite literal is not enclosed in parentheses, square brackets, or curly braces. In this rare case, the opening brace of the literal is erroneously parsed as the one introducing the block of statements. To resolve the ambiguity, the composite literal must appear within parentheses.

if x == (T{a,b,c}[i]) { … }
if (x == T{a,b,c}[i]) { … }
Examples of valid array, slice, and map literals:

// list of prime numbers
primes := []int{2, 3, 5, 7, 9, 2147483647}

// vowels[ch] is true if ch is a vowel
vowels := [128]bool{'a': true, 'e': true, 'i': true, 'o': true, 'u': true, 'y': true}

// the array [10]float32{-1, 0, 0, 0, -0.1, -0.1, 0, 0, 0, -1}
filter := [10]float32{-1, 4: -0.1, -0.1, 9: -1}

// frequencies in Hz for equal-tempered scale (A4 = 440Hz)
noteFrequency := map[string]float32{
        "C0": 16.35, "D0": 18.35, "E0": 20.60, "F0": 21.83,
        "G0": 24.50, "A0": 27.50, "B0": 30.87,
}

【 在 eventvwr 的大作中提到: 】
: 标  题: 咨询个切片初始化的问题
: 发信站: 水木社区 (Sat Dec  3 20:59:58 2022), 站内
:
: 各位大佬，新手咨询个问题
:
: 代码如下：
:
:
: type field struct {
:         name string
: }
:
: data1 := []*field{{"one"}, {"two"}, {"three"}}
: data2 := []field{{"four"}, {"five"}, {"six"}}
:
: 这么写可以，而data1是个指针切片，但是data1与data2中的定义是一样的，这是有啥语法糖吗？
: 还有就是 var d field = {"one"} 这么写就报语法错误，为啥定义切片的时候，可以直接用{"one"}代替 field实例呢。
:
: --
:
: ※ 来源:·水木社区 mysmth.net·[FROM: 114.253.36.*]
--
FROM 124.126.151.*