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Custom views with Storyboard
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Putting the widget/view in a separate .xib file works, and is appropriate especially if you might want to reference that same view from multiple View Controllers.
However, sometimes you do want to see the additional view/widget within the same storyboard, and it is possible. Here's how ...
Service vs IntentService in the Android platform
...vice and IntentService may be triggered from any thread, activity or other application component.
Runs On
The Service runs in background but it runs on the Main Thread of the application.
The IntentService runs on a separate worker thread.
Limitations / Drawbacks
The Service may block the M...
What is the difference between varchar and nvarchar?
...onversion errors is a non-trivial problem.
If you are interfacing with an application that uses only ASCII, I would still recommend using Unicode in the database. The OS and database collation algorithms will work better with Unicode. Unicode avoids conversion problems when interfacing with other s...
Correct owner/group/permissions for Apache 2 site files/folders under Mac OS X?
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@Jpsy That should work fine if your app needs to write to itself. It introduces other potential security issues if other code is running also as _www (and might maliciously alter the CMS code), so just be careful. If you can restrict writeable (g+w) to a deep...
Format a Go string without printing?
...rFormatResult, err := FormatComplex("Hello {user} what are you doing here {app} ?", map[string]string{"user":"vpupkin", "app":"mn_console"})
assert.Nil(t, err)
assert.Equal(t, "Hello vpupkin what are you doing here mn_console ?", strFormatResult)
}
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ASP.NET MVC A potentially dangerous Request.Form value was detected from the client when using a cus
...bove works for usages of the default modelbinder.
Custom ModelBinder
It appears that a call to bindingContext.ValueProvider.GetValue() in the code above always validates the data, regardless any attributes. Digging into the ASP.NET MVC sources reveals that the DefaultModelBinder first checks if ...
SQLAlchemy: Creating vs. Reusing a Session
... and I wanted to stop the proliferation of small-scale "helpers" that each approached the issue of this redundancy in some new and more confusing way.
So sessionmaker() is just a tool to help you create Session objects when you need them.
Next part. I think the question is, what's the difference...
Get JSF managed bean by name in any Servlet related class
...= (Bean) request.getSession().getAttribute("beanName");
and @ManagedBean @ApplicationScoped by:
Bean bean = (Bean) getServletContext().getAttribute("beanName");
Note that this prerequires that the bean is already autocreated by JSF beforehand. Else these will return null. You'd then need to manual...
How to delete migration files in Rails 3
...s not the last one), I just perform a new rake db:migrate again.
If your application is already on production or staging, it's safer to just write another migration that destroys your table or columns.
Another great reference for migrations is: http://guides.rubyonrails.org/migrations.html
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How to append something to an array?
How do I append an object (such as a string or number) to an array in JavaScript?
30 Answers
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