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
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
在你的指示结尾处有一条新路线。 使用<代码>gets.chomp。
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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