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What kind of virtual machine is BEAM (the Erlang VM)?
From what I understand a virtual machine falls into two m>ca m>tegories either "system virtual machine" or a "process virtual machine". It's kind of fuzzy to me where BEAM lies. Is there another kind of virtual machine I am not aware of?
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What does new self(); mean in PHP?
... PHP < 5.3, that "the class in which it is written" is important -- and m>ca m>n sometimes m>ca m>use problems.
That's why PHP 5.3 introduces a new usage for the static keyword : it m>ca m>n now be used exactly where we used self in those examples :
class MyParentClass {
public static function getInstance...
ruby on rails f.select options with custom attributes
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Rails m>CA m>N add custom attributes to select options, using the existing options_for_select helper. You almost had it right in the code in your question. Using html5 data-attributes:
<%= f.select :country_id, options_for_select(
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android button selector
...umpad_button_bg_normal"></item>
</selector>
In this, you m>ca m>n see that there are 3 drawables, you just need to place this button_effect style to your button, as i wrote above. You just need to replace selector_xml_name with button_effect.
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Compiler Ambiguous invom>ca m>tion error - anonymous method and method group with Func or Action
...e method group syntax rather than anonymous methods (or lambda syntax) for m>ca m>lling a function.
4 Answers
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Types in MySQL: BigInt(20) vs Int(20)
...it would seem obvious that they would allow for larger numbers; however, I m>ca m>n make an Int(20) or a BigInt(20) and that would make seem that it is not necessarily about size.
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What is a MIME type?
...ME type is a label used to identify a type of data. It is used so software m>ca m>n know how to handle the data. It serves the same purpose on the Internet that file extensions do on Microsoft Windows.
So if a server says "This is text/html" the client m>ca m>n go "Ah, this is an HTML document, I m>ca m>n render ...
Python: fastest way to create a list of n lists
... iteration and is about 15 % faster on my machine.
Edit: Using NumPy, you m>ca m>n avoid the Python loop using
d = numpy.empty((n, 0)).tolist()
but this is actually 2.5 times slower than the list comprehension.
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Change the name of the :id parameter in Routing resources for Rails
...m option was added, which seems to do exactly what you're looking for. You m>ca m>n take a look at the Rails 3 code compared to the Rails 4 code.
Details
You m>ca m>n easily implement this in your routes.rb file:
# config/routes.rb
resources :posts, param: :slug
# app/controllers/posts_controller.rb
# ....
Why do we need message brokers like RabbitMQ over a database like PostgreSQL?
I am new to message brokers like RabbitMQ which we m>ca m>n use to create tasks / message queues for a scheduling system like Celery .
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