如何用RUBY读取文本文件中的行(How can i read lines in a textfile with RUBY)

如何用RUBY读取文本文件中的行(How can i read lines in a textfile with RUBY)

我是ruby编程的新手。 我试图逐行读取文本文件。

这是我的示例文本文件：

john doe john_d somepassword

这是我的代码：

f = File.open('input.txt', 'r') a = f.readlines n = a[0] s = a[1] u = a[2] p = a[3] str = "<user><name=\"#{n}\" surname=\"#{s}\" username=\"#{u}\" password=\"#{p}\"/></user>" File.open('result.txt', 'w') { |file| file.print(str) }

输出应如下所示：

<user><name="john" surname="doe" username="john_d" password="somepassword"/></user>

但是result.txt看起来像这样。 它包括每行的换行符：

<user><name="john " surname="doe " username="john_d " password="somepassword"/></user>

我怎么能纠正这个？

I am new in ruby programming. I am trying to read a textfile line by line.

Here is my sample textfile:

john doe john_d somepassword

Here is my code:

f = File.open('input.txt', 'r') a = f.readlines n = a[0] s = a[1] u = a[2] p = a[3] str = "<user><name=\"#{n}\" surname=\"#{s}\" username=\"#{u}\" password=\"#{p}\"/></user>" File.open('result.txt', 'w') { |file| file.print(str) }

The output should look like this:

<user><name="john" surname="doe" username="john_d" password="somepassword"/></user>

But the result.txt looks like this. It includes newline character for every line:

<user><name="john " surname="doe " username="john_d " password="somepassword"/></user>

How can i correct this?

最满意答案

它包括每行的换行符，因为每行末尾都有换行符。

只是在你不需要它时删除它：

n = a[0].gsub("\n", '') s = a[1].gsub("\n", '') # ...

It includes newline character for every line, because there is a newline character at the end of every line.

Just removed it when you don't need it:

n = a[0].gsub("\n", '') s = a[1].gsub("\n", '') # ...如何用RUBY读取文本文件中的行(How can i read lines in a textfile with RUBY)

我是ruby编程的新手。 我试图逐行读取文本文件。

这是我的示例文本文件：

john doe john_d somepassword

这是我的代码：

f = File.open('input.txt', 'r') a = f.readlines n = a[0] s = a[1] u = a[2] p = a[3] str = "<user><name=\"#{n}\" surname=\"#{s}\" username=\"#{u}\" password=\"#{p}\"/></user>" File.open('result.txt', 'w') { |file| file.print(str) }

输出应如下所示：

<user><name="john" surname="doe" username="john_d" password="somepassword"/></user>

但是result.txt看起来像这样。 它包括每行的换行符：

<user><name="john " surname="doe " username="john_d " password="somepassword"/></user>

我怎么能纠正这个？

I am new in ruby programming. I am trying to read a textfile line by line.

Here is my sample textfile:

john doe john_d somepassword

Here is my code:

f = File.open('input.txt', 'r') a = f.readlines n = a[0] s = a[1] u = a[2] p = a[3] str = "<user><name=\"#{n}\" surname=\"#{s}\" username=\"#{u}\" password=\"#{p}\"/></user>" File.open('result.txt', 'w') { |file| file.print(str) }

The output should look like this:

<user><name="john" surname="doe" username="john_d" password="somepassword"/></user>

But the result.txt looks like this. It includes newline character for every line:

<user><name="john " surname="doe " username="john_d " password="somepassword"/></user>

How can i correct this?

最满意答案

它包括每行的换行符，因为每行末尾都有换行符。

只是在你不需要它时删除它：

n = a[0].gsub("\n", '') s = a[1].gsub("\n", '') # ...

It includes newline character for every line, because there is a newline character at the end of every line.

Just removed it when you don't need it:

n = a[0].gsub("\n", '') s = a[1].gsub("\n", '') # ...