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A cron job for rails: best practices?
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I'm using the rake approach (as supported by heroku)
With a file called lib/tasks/cron.rake ..
task :cron => :environment do
puts "Pulling new requests..."
EdiListener.process_new_messages
puts "done."
end
To execute from the command line, this is just "rake cron". This command...
converting drawable resource image into bitmap
...rgeIcon);
This is a great method of converting resource images into Android Bitmaps.
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Can an abstract class have a constructor?
...he value 2. The concrete class TimesWhat has a constructor that allows the caller to specify the value.
Abstract constructors will frequently be used to enforce class constraints or invariants such as the minimum fields required to setup the class.
NOTE: As there is no default (or no-arg) const...
How to check if a String contains another String in a case insensitive manner in Java?
... by Dave L. is when s2 contains regex markup such as \d, etc.
You want to call Pattern.quote() on s2:
Pattern.compile(Pattern.quote(s2), Pattern.CASE_INSENSITIVE).matcher(s1).find();
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Disposing WPF User Controls
...osable, and I would like to ensure that its dispose method will always get called once the containing window/application is closed. However, UserControl is not disposable. I tried implementing the IDisposable interface and subscribing to the Unloaded event but neither get called when the host applic...
How do I build a graphical user interface in C++? [closed]
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Essentially, an operating system's windowing system exposes some API calls that you can perform to do jobs like create a window, or put a button on the window. Basically, you get a suite of header files and you can call functions in those imported libraries, just like you'd do with stdlib and ...
How do you detect Credit card type based on number?
...space and punctuation characters from the input. Why? Because it’s typically much easier to enter the digits in groups, similar to how they’re displayed on the front of an actual credit card, i.e.
4444 4444 4444 4444
is much easier to enter correctly than
4444444444444444
There’s reall...
What is the optimal length for an email address in a database?
...ail address must not exceed 254 characters. As described in RFC3696 Errata ID 1690.
I got the original part of this information from here
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Do you need to dispose of objects and set them to null?
...ces will lead to memory leaks.
You can use the using statement to automatically dispose an object once your program leaves the scope of the using statement.
using (MyIDisposableObject obj = new MyIDisposableObject())
{
// use the object here
} // the object is disposed here
Which is function...
How can I create directories recursively? [duplicate]
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Specifically: os.makedirs(os.path.join("/home/dail", "first", "second", "third"))
– mseery
May 14 '11 at 22:41
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