Stack Overflow
Stack Overflow

Questions tagged [ruby-2.4]

For issues relating to development in Ruby, version 2.4. If your question applies to Ruby in general, use the tag [ruby].

73 questions
2
votes
2 answers

Docker: Ruby version upgrade from 2.2.0 to 2.4.0

I am using Ruby version 2.2.0 in my Rails Application and Rails version is 4.2.0. Currently, Project is built through docker, so I am thinking of to upgrade the ruby version with 2.4.0 version. I believe I need to change the docker image to upgrade…
Rohit Lingayat
  • 716
  • 6
  • 23
2
votes
2 answers

Bundle install do not work for rails-4.2.6 for bundler 2.0.1

RVM is set on ruby-2.4.0 & I created new application which have version, gem 'rails', '4.2.6' I updated bundler using, gem update --system gem install bundler bundle version # Bundler version 2.0.1 (2019-01-04 commit d7ad2192f) But I am getting…
ray
  • 5,454
  • 1
  • 18
  • 40
2
votes
1 answer

Gem Carrierwave is not allowing application/octet-stream file to upload

using Rails 5.2, ruby 2.4 gem carrierwave gem 'carrierwave', '~> 1.0' when I upload with extension mdl and content type: application/octet-stream It return on file save the following error ["Job data file You are not allowed to upload \"mdl\"…
vidur punj
  • 5,019
  • 4
  • 46
  • 65
2
votes
3 answers

Ruby 2.4: How To Speed Up Regexp Initializing Dynamically For Use with .match?

I just read about Regexp.match?('string') for Ruby 2.4 and was very excited to see the results! But when I tried it out in my application, I hardly saw any gains. str = 's' Benchmark.bm do |b| b.report(".match ") { 100000.times {…
ayeezy
  • 65
  • 1
  • 8
2
votes
1 answer

Capistrano using wrong ruby version after rvm update

I have a capistrano 3.4.0 script that has successfully deployed an app for years. However today I updated RVM and am trying to deploy my rails app which I'm upgrading to Rails 5.1.4. Capistrano seems to work well for the first part but then throws…
HelloWorld
  • 4,251
  • 8
  • 36
  • 60
2
votes
1 answer

How expensive is generating a random number in Ruby?

Say you want to generate a random number between 1 and 1 billion: rand(1..1_000_000_000) Will Ruby create an array from that range every time you call this line of code? Rubocop suggests this approach over rand(1_000_000_000)+1 but it seems…
Ryan Clark
  • 764
  • 1
  • 8
  • 29
2
votes
1 answer

Why are singleton_class objects frozen in Ruby 2.4 but not in 2.3?

We have an app that uses the Sequel gem to connect to a data source, perform some work, and then return a result which has a number of convenience methods attached to the singleton_class of that object. In ruby 2.3, this code is working as…
DaKaZ
  • 925
  • 1
  • 7
  • 18
2
votes
2 answers

How do I find the index of the maximum value of an array?

I tried the solution recommended here -- In Ruby, what is the cleanest way of obtaining the index of the largest value in an array? array = [nil, nil, nil, nil, nil, 0.9655172413793104, nil, nil] idx = array.each_with_index.max[1] But am getting…
Dave
  • 15,639
  • 133
  • 442
  • 830
2
votes
1 answer

Using FacebookOmniauth in Rails 5

I'm trying to implement Facebook Authentication and I'm stuck. I exactly followed this guide https://www.crondose.com/2016/12/guide-integrating-omniauth-rails-5-facebook-login-feature/ and get this error I, [2017-11-07T00:55:47.114884 #12099] …
Takuya
  • 21
  • 3
2
votes
0 answers

Rails 5 on Heroku - R14 - Memory Quota Exceeded in Ruby (MRI)

I wrote a small Rails 5 API-only application that I am hosting on Heroku. All the application has to do is to retrieve some Data from a DB (currently less than 5K records) and output it as JSON. After deploying the application and running a couple…
Severin
  • 8,508
  • 14
  • 68
  • 117
2
votes
3 answers

In Ruby, how do I check if at least 80% of elements in an array match a pattern?

I'm using Ruby 2.4. How do I check if at least 80% of my elements in an array match a certain pattern? I want to see if each element matches the regex /\d\d?\s*-\s*\d\d?/
Dave
  • 15,639
  • 133
  • 442
  • 830
1
vote
3 answers

Couting of array according to hash key in Ruby

I have an array data = [{:user=>1399, :job=>10270}, {:user=>2614, :job=>10270}, {:user=>3112, :job=>10270}, {:user=>2614, :job=>10271}, {:user=>1455, :job=>10271}] Where 1399, 2614, 3112, 1455 are user ids and 10270, 10271 are job…
Mohammad Yusuf
  • 23
  • 4
1
vote
1 answer

Can I use Ruby 2.4 code in Ruby 3 without getting any error?

I was wondering if I could use codes based on ruby 2.4 in ruby 3 (as in the programs, methodology, syntax and function names). I would like to slowly migrate to Ruby 3, but I would like to know if everything would be stable. Do I need to download…
Alireza Ghaffarian
  • 67
  • 12
1
vote
2 answers

How would I remove a nested value from a hash that occurs multiple times

I have a hash which is say, hash = {"lock_version"=>4, "exhibition_quality"=>false, "within"=>["FID6", "S2"], "repository"=> {"ref"=>"/repositories/2", "repository"=>{"ref"=>"/repositories/2", "within"=>["FID6", "S2"] } } This hash is…
Hannah Baker
  • 71
  • 5
1
vote
1 answer

Singleton disappears when forking unicorn processes in Rails

I've got a rails app running ruby 2.4.4 using Unicorn as a web server which makes use of a singleton to read from Kafka in a background thread. The idea is to have a single instance of the singleton per unicorn process. So 4 processes, 4 singletons.…
timpwbaker
  • 116
  • 1
  • 8
1
2
3 4 5