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鲁比拉的哈希问题
原标题:Hash problem in Ruby
  • 时间:2009-11-08 18:50:10
  •  标签:
  • ruby
  • hash

我在鲁比拉找一些帮助。

我有一部法典。

DB = {  key1  => "value1",
        key2  => "value2"}

key = gets
DB["#{key}"]

when i enter key1 from console i get nil how to resolve this?

我尝试了几种不同的选择,但无法解决。 希望在此提供帮助。

增 编

最佳回答

在你的指示结尾处有一条新路线。 使用<代码>gets.chomp。

问题回答

你试图做些什么? 这个问题并不完全清楚。

如果你想要获得<代码>中的价值, DB,通过进入关键I,即:

DB = {  key1  => "value1",  key2  => "value2"}
key = gets.strip
puts DB[key]

确实,“关键1”只是一种扼杀,如“价值1”。

如果你想用“钥匙1”将“价值1”从非行中删除,那么你需要的是:

DB["key1"]

这将使你回到“价值1”。

Ruby s gets returns the value from the console including the newline character ( ). In practice, unless you need a newline to be on your input, get input with var=gest.chomp. chomp is a method of String the removes ending , , and characters. So your code would be this:

key=gets.chomp
puts DB[key]




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