2

我编写了一个需要一些用户输入的小 Ruby 脚本。我预计用户在需要长条目的数据输入过程中的某些时候可能会有点懒惰，并且他们可能会从另一个包含换行符的文档中剪切和粘贴。

我一直在玩Highline gem 并且非常喜欢它。我怀疑我只是在文档中遗漏了一些东西，但是有没有办法获得可变长度的多行输入？

编辑：问题在于换行符终止了该输入，并且换行符之后的字符最终成为下一个问题的输入。

4

2 回答 2

5

以下是作者在他的示例中使用的内容：（来自 highline-1.5.0/examples）

#!/usr/local/bin/ruby -w

# asking_for_arrays.rb
#
#  Created by James Edward Gray II on 2005-07-05.
#  Copyright 2005 Gray Productions. All rights reserved.

require "rubygems"
require "highline/import"
require "pp"

grades = ask( "Enter test scores (or a blank line to quit):",
              lambda { |ans| ans =~ /^-?\d+$/ ? Integer(ans) : ans} ) do |q|
  q.gather = ""
end

say("Grades:")
pp grades

关于HighLine::Question#gather（来自 highline-1.5.0/lib/highline/question.rb）的一般文档

# When set, the user will be prompted for multiple answers which will
# be collected into an Array or Hash and returned as the final answer.
#
# You can set _gather_ to an Integer to have an Array of exactly that
# many answers collected, or a String/Regexp to match an end input which
# will not be returned in the Array.
#
# Optionally _gather_ can be set to a Hash.  In this case, the question
# will be asked once for each key and the answers will be returned in a
# Hash, mapped by key.  The <tt>@key</tt> variable is set before each
# question is evaluated, so you can use it in your question.
#
attr_accessor :gather

这些似乎是您在图书馆中的主要选择。其他的，你必须自己做。

于 2009-03-03T14:32:34.220 回答
0

会不会是这样的：

input.gsub!('\r\n', '')
于 2009-03-03T12:35:49.337 回答