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Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
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OR
You can use a callback, before_save
class Task < ActiveRecord::Base
before_save :default_values
def default_values
self.status ||= 'P' # note self.status = 'P' if self.status.nil? might be safer (per @frontendbeauty)
end
end
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How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
... mind that you can't use synchronous WCF in Metro. You'll have to use Task-based wrapper which is only asynchronous.
And thank you for you question. I was good starting point for me :)
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How to change progress bar's progress color in Android
...a layer-list (although I'm guessing that you are building the progress bar based on several layers..). In case I do want to use the XML you've attached - where should I place the it in the project's folder and is there anything more I need to do for creating a progress bar based on the XML settings...
jQuery change input text value
...put[type=text].sitebg').val('000000');
EDIT:
do this to find your input based on the name attribute:
$('input[name=sitebg]').val('000000');
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Setting up a git remote origin
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@ClementHerreman - it seems like, based on your explanation, using git pull is not so much a "bad idea" as it is a limited solution. Sometimes I find git pull to be a perfectly effective, simple deployment solution when I have a simple scenario.
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How to sort an array of objects by multiple fields?
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A multi dimensional sorting method, based on this answer:
Update: Here is an "optimized" version. It does a lot more preprocessing and creates a comparison function for each sorting option beforehand. It might need more more memory (as it stores a function for...
Implementing IDisposable correctly
...Below example elaborate all above.
public class DisposeExample
{
// A base class that implements IDisposable.
// By implementing IDisposable, you are announcing that
// instances of this type allocate scarce resources.
public class MyResource: IDisposable
{
// Pointer...
Seeking clarification on apparent contradictions regarding weakly typed languages
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@edalorzo: It is based on taste and personal opinions about (1) what aspects of type theory are relevant and which are irrelevant, and (2) whether a language is required to enforce or merely encourage type restrictions. As I pointed out, one ...
Restrict varchar() column to specific values?
...efault SQL Server collation is case-insensitive, which applies on the database level. Further info here stackoverflow.com/questions/1439485/…
– jwoe
Aug 15 '17 at 15:21
add...
Best implementation for hashCode method for a collection
...rstName, this.lastName);
}
This requires either Guava (com.google.common.base.Objects.hashCode) or the standard library in Java 7 (java.util.Objects.hash) but works the same way.
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