Question

在C:\folder中，我有一个名为text.txt的文件，其内容如下。

This is a test line 1
This is also a test
This is a test on line 3
This was a test.
This is a test for line 5.
This is a test line 1
This is also a test
This is a test on line 3
This was a test.
This is a test for line 5.

我有一个脚本来获取该文件的内容。

$test_template = "{worthless_text:This is a test} for {line_number:line 5}"
$test = gc "C:\folder\test.txt"
$test_array = @()

$counter = 0
foreach($line in $test){

    if($line -match 'line\s+5'){
        $new_line = $line | ConvertFrom-String -TemplateContent $test_template
        $test_array += $new_line.line_number

        $counter++
    }

}

$test_array

我正在用模板解析内容。

这是我的问题。

为什么我执行$ test_array.count会显示4？如果仅显示$test_array的内容，则仅显示找到匹配的两项。
如果我将$test_array += $new_line.line_number更改为$test_array.Add($new_line.line_number)，为什么会出现以下错误？

Exception calling "Add" with "1" argument(s): "Collection was of a fixed size." At line:10 char:9 + $test_array.Add($new_line.line_number) + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : NotSupportedException Exception calling "Add" with "1" argument(s): "Collection was of a fixed size." At line:10 char:9 + $test_array.Add($new_line.line_number) + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [], MethodInvocationException + FullyQualifiedErrorId : NotSupportedException

我真的需要理解我的第二个问题，因为我基于试图解析文件的脚本构建了该测试脚本，当我的模板项进入数组时，而不是使其像（' item1'，'item2'，'item3'）将它们像一个长字符串一样混在一起。（'item1 item2 item3'）。我试图了解自己在做错什么。

Powershell关于测试代码的多个问题

0 个答案: