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Difference between a virtual function and a pure virtual function [duplicate]
What is the difference between a pure virtual function and a virtual function?
4 Answers
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Are database triggers evil? [closed]
...y; it's easy to forget they are there until they hurt you with unintended (and very mysterious) consequences.
This just means they need to be carefully used for the proper circumstances; which in my experience is limited to relational integrity issues (sometimes with finer granularity than you can...
HTTP redirect: 301 (permanent) vs. 302 (temporary)
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Status 302 means that the resource is temporarily located somewhere else, and the client/browser should continue requesting the original url.
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Array initialization syntax when not in a declaration
...me of the array creation / initialization constructs were not in Java 1.0, and (IIRC) were added in Java 1.1.
But "why" is immaterial ... the restriction is there, and you have to live with it.
I know how to work around it, but from time to time it would be simpler.
You can write this:
AClas...
What are named pipes?
What are they and how do they work?
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URL encoding the space character: + or %20?
When is a space in a URL encoded to + , and when is it encoded to %20 ?
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Map a network drive to be used by a service
Suppose some Windows service uses code that wants mapped network drives and no UNC paths. How can I make the drive mapping available to the service's session when the service is started? Logging in as the service user and creating a persistent mapping will not establish the mapping in the context of...
How to edit multi-gigabyte text files? Vim doesn't work =( [closed]
... loading small portions into memory at once? It doesn't seem like Vim can handle it =(
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What is the difference between inversedBy and mappedBy?
I am developing my application using Zend Framework 2 and Doctrine 2.
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android layout: This tag and its children can be replaced by one and a compound drawable
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To expand on Romain Guy's answer, here is an example.
Before:
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:padding="5dp" >
<TextView
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