You have not the ‘\’ in the string, it is added by the inspect: if you puts the string you will realize it: asd = ‘<%= asd %>’.gsub(/<%=(.*)%-?>/, “\#{\\1}”) #=> “\#{ asd }” p asd #=> “\#{ asd }” <- this is `asd.inspect`, which is returned by `p` “\#{ asd }” <- this is `asd.inspect`, … Read more
There are multiple issues with your code: You have syntax errors. You need end after each of your if and else statements unlike python. From your code it looks like you are looking for the if-elsif statement and not the multiple if statements because the else statement will be of the last if. You need … Read more
There’s a wealth of information out there, http://ruby-doc.org/core-2.3.0/Hash.html for example is pretty clear on what hashes are. You need to get your head around some of the basics, there are plenty of tutorials out there, https://www.railstutorial.org/ is one that comes up often, http://guides.rubyonrails.org/getting_started.html is the most obvious place to start. 2 solved hashes — Seem … Read more
You can’t define a module using module Auth(): irb(main):001:0> module Auth() irb(main):002:1> end SyntaxError: (irb):1: syntax error, unexpected ‘\n’, expecting :: or ‘[‘ or ‘.’ and irb(main):001:0> module Auth() irb(main):002:1> def login(id) irb(main):003:2> end irb(main):004:1> end SyntaxError: (irb):1: syntax error, unexpected ‘\n’, expecting :: or ‘[‘ or ‘.’ (irb):4: syntax error, unexpected keyword_end, expecting end-of-input … Read more
Regex is the wrong tool for handling HTML (or XML) 99.9% of the time. Instead, use a parser, like Nokogiri: require ‘nokogiri’ html=”<img src=”https://filin.mail.ru/pic?width=90&height=90&email=multicc%40multicc.mail.ru&version=4&build=7″ style=””>” doc = Nokogiri::HTML(html) url = doc.at(‘img’)[‘src’] # => “https://filin.mail.ru/pic?width=90&height=90&email=multicc%40multicc.mail.ru&version=4&build=7” doc.at(‘img’)[‘style’] # => “” Once you’ve retrieved the data you want, such as the src, use another “right” tool, such as … Read more
Your Python code outputs: a=1&b=2&aaa=bbb In Ruby we might do this as: require ‘cgi’ parameters = {a: 1, b: 2} encoded = parameters.merge(Hash[*[‘aaa’, ‘bbb’]]) .map { |key, value| “#{CGI.escape key.to_s}=#{CGI.escape value.to_s}” } .join(‘&’) p encoded Which outputs the same: a=1&b=2&aaa=bbb It’s longer than the Python code, but IMHO also slightly more readable … You could … Read more
Are there files like DLLS formed? No. Ruby is an interpreted language much like JavaScript, Python, and PHP. If there is not a main() defined, what is the entrypoint for a program? Well, what do you define as an entry point? If you mean running a particular file, then anything not wrapped in a class … Read more
Why is @ad not []? Why would it be? Your code is extremely basic, and it says “if @ad has less than two items, set it to an empty array”. As you clearly show, @ad doesn’t have less than two items, it has three items. Does three seem less than two to you? If you’re … Read more
You have several options price_element = result.search(‘span.result-price’)[0] price = price_element ? price_element.text : ‘$0000’ or price = (result.search(‘span.result-price’)[0].text rescue ‘$0000’) from Ruby 2.3.0 you can take advantage of safe navigation operator price = result.search(‘span.result-price’)[0]&.text || ‘$0000′ 10 solved ruby, undefined method `text’ for nil:NilClass
Hash is within an array so use this p FIXED_COUNTRY_TO_PHONE.map{|x| x[:country]} output [“FI”, “SE”] If you want to take the first country then p FIXED_COUNTRY_TO_PHONE.first[:country] If you want to take the last country then p FIXED_COUNTRY_TO_PHONE.last[:country] Getting the country code according to country p FIXED_COUNTRY_TO_PHONE.detect{|x| x[:country].eql?’FI’}[:customer_phone] 12 solved Get value from Ruby hash
The include method returns a boolean value. So your solution eliminates one of the steps, which is great. The old script didn’t work because you were trying to compare a boolean value to a string. You could take away your quotes on true and you would have come up with a working solution: if val … Read more
Extract from Rails Routing from the Outside In 2.10.1 Adding Member Routes To add a member route, just add a member block into the resource block: resources :photos do member do get ‘preview’ end end This will recognize /photos/1/preview with GET, and route to the preview action of PhotosController, with the resource id value passed … Read more
Your translate method won’t work. The problem is here: if word[0] == “a” || “e” || “o” || “u” || “i” and elsif word[0] != “a” || “e” || “o” || “u” || “i” You can’t compare that way as the right side of either will not do what you think it will. Some simple … Read more
Introduction Pig Latin is a language game or argot in which words in English are altered, usually by adding a fabricated suffix or by moving the onset or initial consonant or consonant cluster of a word to the end of the word and adding a vocalic syllable to create such a suffix. Ruby is a … Read more
This was an unpopular question, but I found out how to do what I wanted some time later. I will post the solution for anyone that would like to do what I wanted to accomplish. So I wanted to make an instance of prints into a product page. I set up a control method in … Read more