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How to build webcrawler in ruby?

+1 vote
106 views

I got succeed in "gem install anemone" then what's my next step to build a Web crawler.

posted Oct 11, 2013 by Seema Siddique

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Now, go read the gems documentation and try out the code.

1 Answer

0 votes

If you want to write a crawler yourself you could start with hpricot.com.

answer Oct 12, 2013 by Deepankar Dubey
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+1 vote

In my local machine I had input some data into database using SQLite3 . When I deployed it to heroku why I can't get data that i input?

I'm doing like this

-in Gemfile
group :development do
 gem 'sqlite3'
end
group :production do
 gem 'pg'
 gem 'rails_12factor'
end
-bundle install
-heroku login
-git init 
-git add .
-git commit -m "test"
-git create
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-heroku run rake db:migrate

How can I get some data when I deployed it to heroku? Please help me.

+2 votes

I am trying to search the phrase of numbers in a html page in the
sentence below:

(253 items)

I used this piece of code, but it does not work,

limit= page.search("div[class=Results]").search("div").gsub("items","")

 begin
 Integer(limit)
 rescue
 return 0
 end

Would you give me any suggestion on this?

+1 vote

Follow the code :-

class Sample
 def bar
 p method(__method__).receiver # only `self` would do the trick.
 end
end

n1=Sample.new # => #
n2=Sample.new # => #

n1.bar # => #
n2.bar # => #

But this is my try. I am looking for any method is available in Ruby,into which say if I pas n1.object_id or #,I will get back in return the local variable name say here it is - n1 ?

+2 votes
import json,httplib,urllib
connection = httplib.HTTPSConnection('api.parse.com', 443)
params =
urllib.urlencode({"username":"cooldude6","password":"p_n7!-e8"})
connection.connect()
connection.request('GET', '/1/login?%s' % params, '', {
 "X-Parse-Application-Id": "${APPLICATION_ID}",
 "X-Parse-REST-API-Key": "${REST_API_KEY}",
 "X-Parse-Revocable-Session": "1"
 })
result = json.loads(connection.getresponse().read())
print result

I need ruby equivalent code for this python script

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