Question

我写了一些需要一些用户输入的Ruby脚本。我预计，在数据输入期间，用户可能会在某些时候有点懒，需要长条目，并且可能会从包含换行符的其他文档中剪切和粘贴。

我一直在玩Highline宝石并非常喜欢它。我怀疑我只是遗漏了文档中的内容，但有没有办法获得可变长度的多行输入？

编辑：问题是换行符终止了该输入，换行符后的字符最终作为下一个问题的输入。

Answer 1

以下是作者在他的例子中使用的内容:(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的一般文件（来自highline-1.5.0 / lib / highline / question.rb）

# 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。还有别的，你必须自己做。

Answer 2

不会是这样的：

input.gsub!('\r\n', '')

红宝石？如何忽略剪切和粘贴用户输入中的换行符？

2 个答案: