How do I convert an array object to a string in PowerShell?
如何将数组对象转换为字符串?
我试过:
1 2 | $a ="This","Is","a","cat" [system.String]::Join("", $a) |
运气不好。PowerShell有哪些不同的可能性?
1 | $a = 'This', 'Is', 'a', 'cat' |
使用双引号(也可以使用分隔符
1 2 3 4 5 6 | # This Is a cat "$a" # This-Is-a-cat $ofs = '-' # after this all casts work this way until $ofs changes! "$a" |
使用运算符联接
1 2 3 4 5 | # This-Is-a-cat $a -join '-' # ThisIsacat -join $a |
使用到
1 2 3 4 5 6 | # This Is a cat [string]$a # This-Is-a-cat $ofs = '-' [string]$a |
我发现通过管道将数组连接到
例如:
1 2 3 4 5 6 | PS C:\> $a | out-string This Is a cat |
这取决于你的最终目标,哪种方法最适合使用。
1 2 3 | 1> $a ="This","Is","a","cat" 2> [system.String]::Join("", $a) |
第二行执行操作并输出到主机,但不修改$A:
1 2 3 | 3> $a = [system.String]::Join("", $a) 4> $a |
这是一只猫
1 2 3 | 5> $a.Count 1 |
从管道
1 2 3 4 5 | # This Is a cat 'This', 'Is', 'a', 'cat' | & {"$input"} # This-Is-a-cat 'This', 'Is', 'a', 'cat' | & {$ofs='-';"$input"} |
写入主机
1 2 3 4 5 | # This Is a cat Write-Host 'This', 'Is', 'a', 'cat' # This-Is-a-cat Write-Host -Separator '-' 'This', 'Is', 'a', 'cat' |
例子
您可以这样指定类型:
1 | [string[]] $a ="This","Is","a","cat" |
检查类型:
1 | $a.GetType() |
确认:
1 2 3 | IsPublic IsSerial Name BaseType -------- -------- ---- -------- True True String[] System.Array |
输出A:
1 2 3 4 5 | PS C:\> $a This Is a cat |
1 2 3 4 5 6 | $a ="This","Is","a","cat" foreach ( $word in $a ) { $sent ="$sent $word" } $sent = $sent.Substring(1) Write-Host $sent |