Hash problem in Ruby

I am newbie in Ruby.. seeking some help..

I have a code

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

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

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

I tried few different alternative but could not solve it. hope to get help her开发者_如何学Goe.

Thanks

There's a newline character at the end of your string. Use gets.chomp instead.

What are you trying to do? It is not completely clear in your question.

If you want to access the value in DB by entering the key I would do it like this:

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

Well, "key1" is just a string, like "value1".

If you want to pull "value1" out of DB using "key1", then all you need is

DB["key1"]

which will give you your "value1" back.

Ruby's gets returns the value from the console including the newline character (\n). 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 \n, \r, and \r\n characters. So your code would be this:

key=gets.chomp
puts DB[key]