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51 lines
973 B
Markdown
51 lines
973 B
Markdown
# 18.2 数组和切片
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- 创建：
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`arr1 := new([len]type)`
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`slice1 := make([]type, len)`
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- 初始化：
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`arr1 := [...]type{i1, i2, i3, i4, i5}`
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`arrKeyValue := [len]type{i1: val1, i2: val2}`
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`var slice1 []type = arr1[start:end]`
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（1）如何截断数组或者切片的最后一个元素：
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`line = line[:len(line)-1]`
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（2）如何使用 `for` 或者 `for-range` 遍历一个数组（或者切片）：
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```go
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for i:=0; i < len(arr); i++ {
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… = arr[i]
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}
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for ix, value := range arr {
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…
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}
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```
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（3）如何在一个二维数组或者切片 `arr2Dim` 中查找一个指定值 `V`：
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```go
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found := false
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Found: for row := range arr2Dim {
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for column := range arr2Dim[row] {
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if arr2Dim[row][column] == V{
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found = true
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break Found
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}
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}
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}
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```
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## 链接
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- [目录](directory.md)
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- 上一节：[字符串](18.1.md)
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- 下一节：[映射](18.3.md)
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