powershell-Basics: Arrays

(i) deletion and addition of elements in an array

#代表创建一个数组, containing 1 to 4 elements

PS c:\windows\system32> $num =1..4

#查看创建好的数组

PS c:\windows\system32> $num

1

2

3

4

#删除数组的第三个元素, note that is counted starting from 0, the above definition of the array has 4 elements, then the count is 0,1,2,3, so this removes the third element, is to preserve the 0,1,3 element, delete the 2nd element

PS c:\windows\system32> $num = $num [0..1]+ $num [3]

#再次查看, you can see that a third element has been deleted

PS c:\windows\system32> $num

1

2

4

#我们可以单独查看0, the element represented by 1 is

PS c:\windows\system32> $num [0..1]

1

2

#查看3代表的元素是空的, because now only 1,2,4 three numbers, the fourth element has not been, so is empty

PS c:\windows\system32> $num [3]

# $num [2] represents viewing the third element (starting from 0 is the third one) and is currently 4

PS c:\windows\system32> $num [2]

4

#添加数组中的元素, by using + =, here I add an element 3

PS c:\windows\system32> $num + = "3"

#查看结果

PS c:\windows\system32> $num

1

2

4

3

(ii) Arrays and hash tables

Arrays are used when creating a hash table because the element keywords that create arrays and hash tables do not conflict. One is a comma, the other is a semicolon.

PS c:\windows\system32> [email protected]{Name = "Xiaoming"; Age= "n"; sex= "men"; books= "Sanguo", "Suihu", "Xiyou"}

PS c:\windows\system32> $stu

name                             value                                            

----                           -----

Books {Sanguo, Suihu, xiyou}

name                             xiaoming                                         

age                              12                                               

Sex men

PS c:\windows\system32>

This article from "Zeng Hung Xin Technical column" blog, declined to reprint!

powershell-Basics: Arrays