Posts by fotanus • 1,421 points
15 posts
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12
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answers1331
viewsA: Ruby - What’s the difference if you use two dots or quotes in a string?
Short version: Use :simbolos for code control "strings", and "strings" to what will appear on the user screen. The first thing to say is that you should not confuse strings with symbols. When you…
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answer146
viewsQ: When to use `for x in y`and when to use `each`
In my other question I figured out the difference between for x in y and the method each. Now, I ask, when should I use each of them? Could give some examples of cases where one should use one and…
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27
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answers27173
viewsQ: How do I do an entire division?
Using ruby, the division of two integers is an integer division, that is, the result is an integer number. For example: 3/2 => 1 If I want the result to be a decimal number, I can use a floating…
javascriptasked fotanus 1,421 -
27
votes4
answers9017
viewsQ: How to declare a constant in Javascript?
How can I declare a constant in Javascript? I am looking for the equivalent (at least semantically) of const int NUMERO_MAGICO=3; in C.
javascriptasked fotanus 1,421 -
12
votes2
answers5931
viewsQ: git merge or rebase
When I program using git, I always use merge from my branch in master to add new code, but some graphic tools like smartgit rebase instead of merge. I must use the command rebase or merge to add my…
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14
votes4
answers17336
viewsQ: How do I copy commits from one branch to another?
I’m using the following workflow with git: I set a task I create a branch for her from the master Implement the task I pull on the master I merge my branch into master I push the master However, I…
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10
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answer165
viewsQ: What is the difference between `for x in y` and `Enumerable#each`?
We can iterate an array/list in ruby in two ways: Using the syntax for x in y: > for x in [1,2,3] do > puts x > end 1 2 3 => [1, 2, 3] Using the method .each > [1,2,3].each do |x|…
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answers3165
viewsA: Function to increment value within the div
There’s nothing wrong. Your code works. You can check in the jsfiddle Answer the question after edited There are some syntax and logic errors. I think you want to that. I advise you to stop thinking…
javascriptanswered fotanus 1,421 -
1
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answer138
viewsA: Do not use hidden_field fields in nested forms
So, formally responding to, Change <%= form_for(@responsible, :url => (@responsible.new_record? ? enterprise_responsibles_path(@responsible.enterprise) :…
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votes4
answers15127
viewsA: Uncaught Syntaxerror: Unexpected end of input
You can use the javacriptlint for that reason. Just copy and paste the code there and it shows you syntax errors. The site is a tool lint. Unfortunately there isn’t a wiki page for lint tools in…
javascriptanswered fotanus 1,421 -
4
votes3
answers1327
viewsA: Place information in field fields of a URL and send to the server with a program language
Using Java you can use the framework Selenium. After writing a script, it opens the browser and "has a life of its own". At first, Selenium is a framework for testing web graphical user interface,…
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4
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answers3111
viewsA: How to check the database update from a browser?
The model adopted by web servers before HTML 5 are one-way requests, which in practice means that the server can never send a request to the client, only the other way around. The server can only…
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answers131
viewsA: Problems with belongs_to when using Ajax in Rails 4
Most likely your object has an ID of a product that has already been deleted. I guess the following doesn’t work either: <td><%= Product.find(i.product_id) %> </td>…
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1
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answer86
viewsA: How to test a Singleton class in Ruby?
Better show with an example: # Obs.: Não foi testado describe MySingletonClass do subject { MySingletonClass.instance } describe '#to_s' do it 'works' do expect(subject.to_s).to be eq(subject.to_s)…
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10
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answers10991
viewsA: How to escape quotes in Postgresql?
To escape quotes, you can duplicate them. Example: f_criaproduto('meu produto é ''televisao'' da melhor qualidade') To avoid the problem of having too many quotes to exhaust, you can use the dollars…