Go array, slice

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Array

Package Mainimport"FMT"Func Main () {/* Declaration of Array *1, Var ab [2]int2, var BC3, CD: = [2]int{} [3]int{1,2}    [5]int{4:1}    [...]int{4:1}    [...]int{4,1,3}    [...]int{0:4,1:1,2:3} */Var a [2]string FMT. Println (a) var ab [2]int = [2]int{} fmt. PRINTLN (ab) var BC = [2]int{1,2} FMT. PRINTLN (BC) c: = [3]int{} fmt. Println (c) B: = [3]int{1,2} FMT. Println (b) E: = [5]int{4:1} FMT. Println (e) G: = [...]int{4:1} FMT. Println (g) F: = [...]int{4,1,3} FMT. Println (f) H: = [...]int{0:4,1:1,2:3} FMT. Println (h) hh: = [...]int{0:4,1,2} FMT. PRINTLN (HH)//array pointer fmt. Println ("---------array pointer----------") I: = [...]int{9:1} var p *[Ten]int = &i FMT. PRINTLN (p) fmt. PRINTLN (*p) x, y: =1,2J: = [...]*int{&x, &y} fmt. Println (j) K: = [2]int{1,2} L: = [2]int{1,2} FMT. Println (k = = l)//Pointer to array m: = new ([5]int) fmt. PRINTLN (m)//operation of an element AA: = [Ten]int{} aa[1] =2Fmt. PRINTLN (aa) BB: = new ([Ten]int) bb[1] =2Fmt. Println (BB) cc: = [2][3]int{{1,1,1},        {2,2,2}} FMT. PRINTLN (cc) DD: = [...][3]int{{1,1,1},        {2,2,2}} FMT. PRINTLN (dd) FF: = [...][3]int{{1,1},        {0:2,2,2}} FMT. PRINTLN (FF)//The following is the wrong way//EE: = [...][...]int{//{1,1,1},    //      {2,2,2}}//FMT. PRINTLN (EE)}

[ ][0 0][1 2][0 0 0][1 2 0][0 0 0 0 1][0 0 0 0 1][4 1 3][4 1 3][4 1 2]---------Array pointer----------&[0 0 0 0 0 0 0 0 0 1][0 0 0 0 0 0 0 0 0 1][0xc0820083a0 0xc0820083a8]true&[0 0 0 0 0][0 2 0 0 0 0 0 0 0 0]&[0 2 0 0 0 0 0 0 0 0][ [1 1 1] [2 2 2]][ [1 1 1] [2 2 2]][ [1 1 0] [2 2 2]]

Slice

这里写代码片

Package Mainimport"FMT"Func Main () {/ * Declaration 1, A1: = 2, var b []int 3, var d []int{1, 3} []int {}    */A: = []int{} fmt. Println (a) A1: = []int{1,3} FMT. PRINTLN (A1)varb []intFmt. Println (b)varc []int= []int{} fmt. Println (c)vard = []int{} fmt. Println (d)//With head not including tailFmt. Println ("--------intercept------------") E: = [5]int{1,2,3,4,5} F: = e[2:4] G: = e[:2] H: = e[2] I: = e[2:] FMT. Println (i) fmt. Println (h) fmt. Println (g) fmt. Println (f)//3 elements 10 memoryFmt. Println ("--------make------------") J: = Make ([]int,3,Ten) FMT. Println (j)//length, Maximum capacityFmt. Println (Len (j), Cap (j)) M: = []byte{' A ',' B ',' C ',' d ',' E ',' F ',' G ',' h '} N: = m[2:5] FMT. Println (string(n) fmt. Println (Len (n), Cap (n)) Q: = n[3:5] FMT. Println (string(q))//appendS1: = Make ([]int,3,6) FMT. Printf ("%p\n", S1)//memory addressS1 = append (S1,1,2) FMT. Printf ("%v%p\n", S1, s1) S1 = append (S1,1,2,3)//exceeds the original length, the memory will be redistributedFmt. Printf ("%v%p\n", S1, S1)//points to memory addressFmt. Println ("-----memory address----") LL: = []int{1,2,3,4,5,6} LL1: = ll[2:5]//345LL2: = ll[1:3]//23Fmt. Println (LL1, LL2) ll1[0] =9Fmt. Println (LL1, LL2)/////////////////////////// ///MM: = []int{1,2,3,4,5,6} MM1: = mm[2:5]//345mm2: = mm[1:3]//23Fmt. Println (MM1, mm2) mm2 = append (mm2,1,2,3,4,5) mm1[0] =9Fmt. Println (MM1, mm2)/  ////////copy/////////// /////O1: = []int{1,2,3,4} O2: = []int{5,6} copy (O1, O2)//o2 Copy to O1Fmt. Println (O1, O2) Oo1: = []int{1,2,3,4} Oo2: = []int{5,6} copy (Oo2, oo1)//oo1 Copy to Oo2Fmt. Println (Oo1, oo2) Ooo1: = []int{1,2,3,4} Ooo2: = []int{5,6,7} copy (ooo1[2:4], ooo2[0:2])//oo1 Copy to Oo2Fmt. Println (OOO1)}

[][1 3][][][]--------Intercept------------[3 4 5]3[1 2][3 4]--------make------------[0 0 0]3 10CDE3 6FG0xc0820341b0[0 0 0 1 2]0xc0820341b0[0 0 0 1 2 1 2 3]0xc08202e180-----Memory address----[3 4 5] [2 3][9 4 5] [2 9][3 4 5] [2 3][9 4 5] [2 3 1 2 3 4 5][5 6 3 4] [5 6][1 2 3 4] [1 2][1 2 5 6]