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How does the const constructor actually work?
...in Dart is really an anonymous storage location combined with
an automatically created getter and setter that reads and updates the
storage, and it can also be initialized in a constructor's initializer
list.
A final field is the same, just without the setter, so the only way to
set it...
How to switch to the new browser window, which opens after click on the button?
...
You can actually use the call for driver.close() since you are switching window handles on the driver and calling for the window that you are currently on to close. I use it regularly in my code when dealing with multiple windows. driver.Quit() is t...
How can building a heap be O(n) time complexity?
...ritten this to describe how a max heap works. This is the type of heap typically used for heap sort or for a priority queue where higher values indicate higher priority. A min heap is also useful; for example, when retrieving items with integer keys in ascending order or strings in alphabetical orde...
How to pull request a wiki page on GitHub?
...hub account:
Create a new repository on your github account. Let's call it "Taffy-Wiki".
Clone the Taffy wiki repo to your local machine somewhere: git clone git@github.com:atuttle/Taffy.wiki.git
Remove the original "origin" remote and add your github repo as new "origin" git remote rm o...
Error message Strict standards: Non-static method should not be called statically in php
...
to
public static function getInstanceByName($name=''){
if you want to call them statically.
Note that static methods (and Singletons) are death to testability.
Also note that you are doing way too much work in the constructor, especially all that querying shouldn't be in there. All your cons...
What's the difference between %s and %d in Python string formatting?
...
what do you call these %s, %d, etc?
– Chaine
May 19 '17 at 18:21
1
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How do I intercept a method call in C#?
...d like to have tracing functionality i.e. I would like to log every method call (method signature and actual parameter values) and every method exit (just the method signature).
...
A cron job for rails: best practices?
...
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...
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...
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...