Newbea question again?

Ruby
1

Hello Ruby Developers,

I have tiny problem about comparison. I have a array and hash. I want to
compare array elements with hash keys.
more details:
this is my hash, I create it from yaml file
my yaml file
template1:
template_of_roster3: template_of_roster2
template_of_roster4: template_of_roster3

@get_config=YAML.load(File.open("#{PATH_IM}/config/converter.yml"))
@get_config == Hash
@my_hash==Hash
@enterprises=@get_config[“template1”]

and my array
@my_array=[“template_of_roster”,“template_of_roster2”,“template_of_roster3”]

my question here is that how can I compare array with hash keys and how
can I can send warning message to user?
@my_array.eql?(@my_hash.key)==false
warn “warning message”

something like this.

thanks…

2

On Tue, Mar 4, 2008 at 10:29 PM, Ibrahim D. [email protected] wrote:

can I can send warning message to user?
@my_array.eql?(@my_hash.key)==false
warn “warning message”

something like this.

thanks…

You have a strange structure here. You have values that act as keys.
4 → 3 and 3 → 2. But, if it won’t be circular, and your hashes are
truly nested, then, here’s a cowboy recursive hack…

@b = false
def check h, key
h.each { |k, h| @b ||= h.keys.include?(key) || check(h, key) rescue
false; @b}
end

hsh = YAML.load_file(“your_file.yml”)
puts check(hsh, “template_of_roster”)
puts check(hsh, “template_of_roster3”)

=> false
=> true

If your hashes are not nested (i.e. you have one level that you are
concerned about), then all you should just use use
h[“template1”].keys.include?

hth,
Todd

3

@b = false
def check h, key
h.each { |k, h| @b ||= h.keys.include?(key) || check(h, key) rescue
false; @b}
end

hsh = YAML.load_file(“your_file.yml”)
puts check(hsh, “template_of_roster”)
puts check(hsh, “template_of_roster3”)

=> false
=> true

If your hashes are not nested (i.e. you have one level that you are
concerned about), then all you should just use use
h[“template1”].keys.include?

hth,

thank you very much…

Todd

4

On Wed, Mar 5, 2008 at 2:53 AM, Ibrahim D. [email protected] wrote:

thank you very much…
After looking at the documentation, I guess you can simply replace…

#keys.include?

…with…

#has_key?

Todd

5

Todd B. wrote:

On Wed, Mar 5, 2008 at 2:53 AM, Ibrahim D. [email protected] wrote:

thank you very much…
After looking at the documentation, I guess you can simply replace…

#keys.include?

…with…

#has_key?

Todd

thanks again.