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Pointer vs. Reference
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What about polymorphism (e.g. Base* b = new Derived())? This seems like a case that can't be handled without pointers.
– Chris Redford
Mar 7 '13 at 19:25
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What is difference between MVC, MVP & MVVM design pattern in terms of coding c#
...’s because a single controller may select different views to be rendered based on the operation being executed.
There is one way arrow from Controller to View. This is because the View doesn’t have any knowledge of or reference to the controller.
The Controller does pass back the Model, so the...
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 ...
Does R have an assert statement as in python?
...E){
warning("error message to print")
}
These are both provided by base R and require no packages to run or include in writing your own functions. I prefer this approach to write code with fewer dependancies and this syntax is widely used in package development. However, similar functionalit...
Test whether a Ruby class is a subclass of another class
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@JunanChakma Based on how the English word "ancestors" is defined, I agree that the return value should not include B. But it does. The method documentation says, "Returns a list of modules included/prepended in mod (including mod itself)...
What does the 'Z' mean in Unix timestamp '120314170138Z'?
...Zulu time.
Technically, because the definition of nautical time zones is based on longitudinal position, the Z time is not exactly identical to the actual GMT time 'zone'. However, since it is primarily used as a reference time, it doesn't matter what area of Earth it applies to as long as everyon...
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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impr...
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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