blocks|key|1243121|text|查看highline|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1243122|require+"highline/import"
input+=+ask+"Input+text:+"|code-block|syntax|javascript|1243123|entityMap|0|LINK|mutability|MUTABLE|url|http://github.com/JEG2/highline^0|2|8|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

Check out <a href="http://github.com/JEG2/highline" rel="noreferrer">highline</a>:

<pre><code>require "highline/import"
input = ask "Input text: "
</code></pre>

blocks|key|1028325|text|您所提出的解决方案的问题在于，在读取、剥离和分配输入之前，无法构建要打印的字符串。您可以用分号分隔每一行：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1028326|$+ruby+-e+'print+"Input+text:+";+input=gets.strip;+puts+input'
Input+text:+foo
foo|code-block|syntax|javascript|1028327|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The problem with your proposed solution is that the string to be printed can't be built until the input is read, stripped, and assigned. You could separate each line with a semicolon:

<pre><code>$ ruby -e 'print "Input text: "; input=gets.strip; puts input'
Input text: foo
foo
</code></pre>

blocks|key|1028374|text|我认为像Marc-Andre建议的那样去做是可行的，但是当你可以在你要使用的任何脚本的顶部定义一个两行的函数时，为什么要引入一大堆代码呢：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1028375|def+prompt(*args)
++++print(*args)
++++gets
end

name+=+prompt+"Input+name:+"|code-block|syntax|javascript|1028376|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I think going with something like what Marc-Andre suggested is going to be the way to go, but why bring in a whole ton of code when you can just define a two line function at the top of whatever script you're going to use:

<pre><code>def prompt(*args)
 print(*args)
 gets
end

name = prompt "Input name: "
</code></pre>

blocks|key|1243316|text|一个liner+hack当然。Graceful...well并非如此。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1243317|input+=+[(print+'Name:+'),+gets.rstrip][1]|code-block|syntax|javascript|1243318|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

One liner hack sure. Graceful...well not exactly.

<pre><code>input = [(print 'Name: '), gets.rstrip][1]
</code></pre>

blocks|key|1243386|text|跟随@Bryn的脚步：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1243387|def+prompt(default,+*args)
++print(*args)
++result+=+gets.strip
++return+result.empty?+?+default+:+result
end|code-block|syntax|javascript|1243388|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Following @Bryn's lead:

<pre><code>def prompt(default, *args)
 print(*args)
 result = gets.strip
 return result.empty? ? default : result
end
</code></pre>

blocks|key|1243499|text|我知道这个问题很老，但我想我应该展示一下我使用什么作为获取输入的标准方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1243500|require+'readline'

def+input(prompt="",+newline=false)
++prompt+%2B=+"\n"+if+newline
++Readline.readline(prompt,+true).squeeze("+").strip
end|code-block|syntax|javascript|1243501|这真的很好，因为如果用户在末尾或开头添加奇怪的空格，它会删除这些空格，并保留他们过去输入的内容的历史记录(将true更改为false，这样就不会这样做)。而且，如果ARGV不为空，那么gets将尝试读取ARGV中的文件，而不是获取输入。另外，Readline是Ruby标准库的一部分，因此您不需要安装任何gem。此外，在使用gets时不能移动光标，但在使用Readline时可以。|offset|length|style|CODE|1243502|而且，我知道这个方法不是一行，但当您调用它时，它就是一行|1243503|name+=+input+"What+is+your+name?+"|1243504|entityMap^0|0|0|1I|4|1P|5|2A|4|2K|4|2T|4|3D|8|4I|4|4Y|8|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@$I|V|J|W|K|L]|$I|X|J|Y|K|L]|$I|Z|J|10|K|L]|$I|11|J|12|K|L]|$I|13|J|14|K|L]|$I|15|J|16|K|L]|$I|17|J|18|K|L]|$I|19|J|1A|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|1B|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|1C|8|@]|9|@]|A|$E|F]]|$1|Q|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|R|$]]

I know this question is old, but I though I'd show what I use as my standard method for getting input.

<pre><code>require 'readline'

def input(prompt="", newline=false)
 prompt += "\n" if newline
 Readline.readline(prompt, true).squeeze(" ").strip
end
</code></pre>

This is really nice because if the user adds weird spaces at the end or in the beginning, it'll remove those, and it keeps a history of what they entered in the past (Change the <code>true</code> to <code>false</code> to not have it do that.). And, if <code>ARGV</code> is not empty, then <code>gets</code> will try to read from a file in <code>ARGV</code>, instead of getting input. Plus, <code>Readline</code> is part of the Ruby standard library so you don't have to install any gems. Also, you can't move your cursor when using <code>gets</code>, but you can with <code>Readline</code>.

And, I know the method isn't one line, but it is when you call it

<pre><code>name = input "What is your name? "
</code></pre>

blocks|key|1243555|text|我偶然发现了Inquirer+gem，我真的很喜欢它，我发现它比Highline更整洁和易于使用，尽管它本身缺乏输入验证。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1243556|你的例子可以写成这样|1243557|require+'inquirer'
inputs+=+Ask.input+'Input+text'|code-block|syntax|javascript|1243558|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/arlimus/inquirer.rb^0|6|8|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]]|C|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@]|C|$I|J]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|C|$]]]|L|$M|$5|N|O|P|C|$Q|R]]]]

I found the <a href="https://github.com/arlimus/inquirer.rb" rel="nofollow">Inquirer</a> gem by chance and I really like it, I find it way more neat and easy to use than Highline, though it lacks of input validation by its own. 
Your example can be written like this

<pre><code>require 'inquirer'
inputs = Ask.input 'Input text'
</code></pre>

Often I find myself doing the following:

<pre><code>print "Input text: "
input = gets.strip
</code></pre>

Is there a graceful way to do this in one line? Something like:

<pre><code>puts "Input text: #{input = gets.strip}"
</code></pre>

The problem with this is that it waits for the input before displaying the prompt. Any ideas?

One liner in Ruby for displaying a prompt, getting input, and assigning to a variable?

我经常发现自己在做以下事情：print "Input text: "input = gets.strip有没有一种优雅的方式在一行中做到这一点？类似于：puts "Input text: #{input = gets.strip}"这样做的问题是，在显示提示之前，它会等待输入。有什么想法吗？

问Ruby中的一行代码用于显示提示、获取输入和赋值给变量？
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