Try using `[]`, like:

    empty_array: []

So in Ruby you have:

    x = YAML::load(&quot;empty_array: []&quot;)
    x # =&gt; {&quot;empty_array&quot; =&gt; []}

Is it okay to use an anchor tag without including the `href` attribute, and instead using a JavaScript click event handler? So I would omit the `href` completely, not even have it empty (`href=&quot;&quot;`).


Is an anchor tag without the href attribute safe?

What I am trying to do is click a button (that was created in code) and have it call up a different view controller then have it run a function in the new view controller.

I know it could be done relatively easily in IB but that isn&#39;t an option.

An example of what I want to do would be if you had two view controllers one with a splash screen of house. The other view controller had a walk through of the house on it that you could go through all the rooms in a set order. The splash screen would have buttons for each room that would allow you to jump to any point on the walk through.


iOS - Calling App Delegate method from ViewController

    array_with_three_elements:
    - 1
    - 2
    - 3
    
    empty_array:


Is there any way to specify that empty_array: is an array with no elements, such as with `[]`? When I load it into a ruby hash I&#39;d like it to know that it&#39;s an array.

Thanks


How do I create an empty array in YAML?

<pre><code class="hljs language-diff">array_with_three_elements:
- 1
- 2
- 3

empty_array:
</code></pre>
Is there any way to specify that empty_array: is an array with no elements, such as with <code>[]</code>? When I load it into a ruby hash I'd like it to know that it's an array.
Thanks

can you do this in ruby?
it seems to &quot;miss&quot; the cases with inequalities

     case myvar
     when  myvar &lt; -5
        do somethingA
     when -5..-3
        do special_something_XX
     when -2..-1
        do special_something_YY
     when myvar == 0
        do somethingB
     when myvar &gt; 0
        go somethingC
     end



how to use ruby &quot; case ... when &quot; with inequalities?

I have the following `Array = [&quot;Jason&quot;, &quot;Jason&quot;, &quot;Teresa&quot;, &quot;Judah&quot;, &quot;Michelle&quot;, &quot;Judah&quot;, &quot;Judah&quot;, &quot;Allison&quot;]`

How do I produce a count for each **identical element**? 

    Where:
    &quot;Jason&quot; = 2, &quot;Judah&quot; = 3, &quot;Allison&quot; = 1, &quot;Teresa&quot; = 1, &quot;Michelle&quot; = 1?

or **produce a hash** Where:

   Where:
    hash = { &quot;Jason&quot; =&gt; 2, &quot;Judah&quot; =&gt; 3, &quot;Allison&quot; =&gt; 1, &quot;Teresa&quot; =&gt; 1, &quot;Michelle&quot; =&gt; 1 }

How to count identical string elements in a Ruby array

I currently use Devise for user registration/authentication in a Rails project. When a user wants to cancel their account, the user object is destroyed, which leaves my application in an undesired state.

What is the easiest way to implement a &quot;soft delete&quot;, i.e. only removing personal data and marking the user as deleted? I still want to keep all record associations.

I assume I will have to first introduce a new &quot;deleted&quot; column for users. But then I am stuck with this default code in the user&#39;s profile view:

    &lt;p&gt;Unhappy? &lt;%= link_to &quot;Cancel my account&quot;, registration_path(resource_name), :confirm =&gt; &quot;Are you sure?&quot;, :method =&gt; :delete %&gt;.&lt;/p&gt;

Where can I find the `:delete` method? How should I overwrite the default Devise methods?

How to &quot;soft delete&quot; user with Devise

    (1..4).collect do |x|
      next if x == 3
      x + 1
    end # =&gt; [2, 3, nil, 5]
        # desired =&gt; [2, 3, 5]

If the condition for `next` is met, `collect` puts `nil` in the array, whereas what I&#39;m trying to do is put _no_ element in the returned array if the condition is met. Is this possible without calling `delete_if { |x| x == nil }` on the returned array?

(Using Ruby 1.8.7; my code excerpt is heavily abstracted)

Skip over iteration in Enumerable#collect

What is the following doing, and why is it at the top of the page?

    $:.unshift File.dirname(__FILE__)

https://github.com/mojombo/jekyll/blob/master/lib/jekyll.rb


What is &#39;$:.unshift File.dirname(__FILE__)&#39; doing?

What is the difference between each of the following array definitions.

    var myArray = [];
    var myArray = {};
    var myArray = new Array();

JavaScript arrays braces vs brackets

Is it possible to write something similar to the following?

    public const string[] Titles = { &quot;German&quot;, &quot;Spanish&quot;, &quot;Corrects&quot;, &quot;Wrongs&quot; };


Declare a const array

Some languages enable you to just declare a function returning an array like a normal function, like Java:

    public String[] funcarray() {
       String[] test = new String[]{&quot;hi&quot;, &quot;hello&quot;};
       return test;
    }


Why doesn&#39;t C++ support something like `int[] funcarray(){}` ?
You can return an array, but it&#39;s a real hassle to make such a function. And also, I heard somewhere that strings are just arrays of char. So if you can return a string in C++, why not an array?

Why doesn&#39;t C++ support functions returning arrays?

I am trying to decode a JSON string into an array but i get the following error.

&gt; Fatal error: Cannot use object of type
&gt; stdClass as array in
&gt; C:\wamp\www\temp\asklaila.php on line
&gt; 6

Here is the code:

    &lt;?php
    $json_string = &#39;http://www.domain.com/jsondata.json&#39;;
    
    $jsondata = file_get_contents($json_string);
    $obj = json_decode($jsondata);
    print_r($obj[&#39;Result&#39;]);
    ?&gt;

json_decode to array

I&#39;d like to get [PyYAML](http://pyyaml.org/)&#39;s loader to load mappings (and ordered mappings) into the Python 2.7+ [OrderedDict](http://docs.python.org/library/collections.html#collections.OrderedDict) type, instead of the vanilla `dict` and the list of pairs it currently uses.

What&#39;s the best way to do that?

In Python, how can you load YAML mappings as OrderedDicts?

I want to convert a big yaml file to PHP array **source code**. I can read in the yaml code and get back a PHP array, but with var_dump($array) I get pseudo code as output. I would like to print the array as valid php code, so I can copy paste it in my project and ditch the yaml.

print an array as code

I have this:

    user_dir: /home/user
    user_pics: /home/user/pics

How could I use the `user_dir` for user_pics? If I have to specify other properties like this, it would not be very DRY.

How can I do string concatenation, or string replacement in YAML?

I have this configuration:

    development:
      adapter: mysql2
      encoding: utf8
      database: my_db_name
      username: root
      password: my_password
      host: mysql://127.0.0.1:3306

And I am getting this error:

    Unknown MySQL server host &#39;mysql://127.0.0.1:3306&#39; (1)

Is there something obvious that I am doing incorrectly? 

Correct MySQL configuration for Ruby on Rails Database.yml file

Say I have the following string:

    &quot;abcdefghijklmnopqrstuvwxyz&quot;

And I think its too long for one line in my YAML file, is there some way to split that over several lines?

    &gt;-
        abcdefghi
        jklmnopqr
        stuvwxyz

Would result in `&quot;abcdefghi jklmnopqr stuvwxyz&quot;` which is close, but it shouldn&#39;t have any spaces.

Content Type	Original Author	Original Content on Stackoverflow
Question	Julian Mann	View Question on Stackoverflow
Solution 1 - Ruby	maerics	View Answer on Stackoverflow

How do I create an empty array in YAML?

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iOS - Calling App Delegate method from ViewController

Is an anchor tag without the href attribute safe?

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