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5.2 []struct{}

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Lines changed: 39 additions & 0 deletions

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`@@ -0,0 +1,39 @@`
	`1`	`+package datastructure`
	`2`	`+`
	`3`	`+import "testing"`
	`4`	`+`
	`5`	`+type Item struct {`
	`6`	`+ id int`
	`7`	`+ val [1024]byte`
	`8`	`+}`
	`9`	`+`
	`10`	`+// genItems 生成指定长度 []*Item 切片`
	`11`	`+func genItems(n int) []*Item {`
	`12`	`+ items := make([]*Item, 0, n)`
	`13`	`+ for i := 0; i < n; i++ {`
	`14`	`+ items = append(items, &Item{id: i})`
	`15`	`+ }`
	`16`	`+ return items`
	`17`	`+}`
	`18`	`+`
	`19`	`+func BenchmarkIndexPointer(b *testing.B) {`
	`20`	`+ items := genItems(1024)`
	`21`	`+ for i := 0; i < b.N; i++ {`
	`22`	`+ var tmp int`
	`23`	`+ for k := 0; k < len(items); k++ {`
	`24`	`+ tmp = items[k].id`
	`25`	`+ }`
	`26`	`+ _ = tmp`
	`27`	`+ }`
	`28`	`+}`
	`29`	`+`
	`30`	`+func BenchmarkRangePointer(b *testing.B) {`
	`31`	`+ items := genItems(1024)`
	`32`	`+ for i := 0; i < b.N; i++ {`
	`33`	`+ var tmp int`
	`34`	`+ for _, item := range items {`
	`35`	`+ tmp = item.id`
	`36`	`+ }`
	`37`	`+ _ = tmp`
	`38`	`+ }`
	`39`	`+}`

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`@@ -0,0 +1 @@`
	`1`	`+![carbon (2)](https://raw.githubusercontent.com/boatrainlsz/my-image-hosting/main/202203192151611.svg)`

Lines changed: 0 additions & 5 deletions

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`@@ -2,11 +2,6 @@ package datastructure`
`2`	`2`
`3`	`3`	`import "testing"`
`4`	`4`
`5`		`-type Item struct {`
`6`		`- id int`
`7`		`- val [1024]byte`
`8`		`-}`
`9`		`-`
`10`	`5`	`func BenchmarkIndexStructSlice(b *testing.B) {`
`11`	`6`	`var items [1024]Item`
`12`	`7`	`for i := 0; i < b.N; i++ {`

Lines changed: 6 additions & 0 deletions

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`@@ -82,3 +82,9 @@ cpu: AMD Ryzen 5 4600U with Radeon Graphics`
`82`	`82`	`\| ------------------------------------------------------------ \| ------------------------------------------------------------ \|`
`83`	`83`	`\| [iterate_struct_test.go](datastructure/iterate_struct_test.go) \| [iterate_struct_test.md](datastructure/iterate_struct_test.md) \|`
`84`	`84`
	`85`	`+#### 5.3 []*struct,因为有了指针,index与range基本无差别`
	`86`	`+`
	`87`	`+\| 代码 \| 验证结果 \|`
	`88`	`+\| ------------------------------------------------------------ \| ------------------------------------------------------------ \|`
	`89`	`+\| [iterate_struct_pointer_test.go](datastructure/iterate_struct_pointer_test.go) \| [iterate_struct_pointer_test.md](datastructure/iterate_struct_pointer_test.md) \|`
	`90`	`+`

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