Simple as this: heroku create app-name-here heroku stack:set container git push heroku master Now you will get an error that you need `heroku.yml` file. Make a heroku.yml file in the same directory of `Dockerfile` (which is normally just base directory) build: docker: web: Dockerfile In this case, there is no "run" part in this heroku....

detect can find one fits some condition, in a list find can detect one element comes first for that "find" is "detect" in Ruby language For example: numbers = [0, 4, 2, 3, 9, 8] numbers.find {|n| n.odd? } # first odd number in the list is 3 #=> 3 numbers.find {|n| n > 10 } # there is no number greater than 10 in the list #=> nil See yo...

Ruby has "each" and it does something for each item in a list of items. animals.each do |animal| animal.speak end #=> ["quack", "miaow", "wuf"] one more thing, "reduce" aka "inject" [1,2,3].reduce do |memo, item| memo + item end #=> 6 See you next time!

Ruby is human friendly because for example there are.. "map" and "collect" they do the same thing. There's more than one way of doing the same thing, in Ruby. Another example, "detect" and "find". Guess what? They do exactly the same thing. I think these methods (and other aspects) make Ruby human-friendly. What do you think? See you n...

For Ruby you should install at first, and it's not hard. First, install homebrew from the terminal. Second, install rbenv. And then install Ruby with rbenv command: "rbenv install 3.2.6" Now you installed Ruby version 3.2.6! See you next time!

in Ruby, there's this "itself" method. If you say thing1.itself, it returns the value of thing1. Yes, it is used sometimes, for example group_by(&:itself) will group a list by element itself! That's it for today. See you next time!

in Ruby, everything has its "class" Even the numbers. 1.class will give you Integer. One more thing. You can make your own class with the "class" keyword. class YourClass end yours = YourClass.new # remember "new" here yours.class will return "YourClass" See you next time!

In Ruby coding, there's this "@" and it does passing something (a variable to another method). Let me show you what I mean. Here's an example in Ruby on Rails. When you have that "@" in the code, it shows the number on the screen, as you see. def show @post = Post.find(params[:id]) end <%= @post %> If I remove it from the same code, it...

Let's learn Python! It will be an exciting journey from quick data visualization to artificial intelligence.