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When does invoking a member function on a null instance result in undefined behavior?
...d a weak "use a dereferenced null pointer, get undefined behavior" view.
Now we consider the question.
Yes, (a) results in undefined behavior. In fact, if this is null then regardless of the contents of the function the result is undefined.
This follows from §5.2.5/3:
If E1 has the type ...
Casperjs/PhantomJs vs Selenium
...Recently we have seen majority of our users using Chrome. So we wanted to know - pros and cons of using PhantomJS vs Selenium:
...
How to create a drop shadow only on one side of an element?
... fiddle and you will still see shadow all the way up the sides and also it now doesn't make it all the way across the bottom. how far are you willing to go on the spread parameter to get rid of the sides? Also, probably best for someone with 151 rep to not edit the answer of someone with 7k rep. ...
What's the difference between text/xml vs application/xml for webservice response
...question, but one that is frequently visited and clear recommendations are now available from RFC 7303 which obsoletes RFC3023. In a nutshell (section 9.2):
The registration information for text/xml is in all respects the same
as that given for application/xml above (Section 9.1), except that
the "...
Which parallel sorting algorithm has the best average case performance?
...
This would have been a great answer, once. Now, most of the links are broken.
– Tim Long
Apr 14 '19 at 0:46
add a comment
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JPA or JDBC, how are they different?
...ssfish for the same. I saw some examples and also read the Oracle docs to know all about Java EE 5. Connecting to a database was very simple. I opened a dynamic web project, created a session EJB , I used EntityManager and with the get methods could access the stored data table.
...
Understanding the transclude option of directive definition?
...cept is pretty simple: Include the content from one place into another. So now your directive will look something like this:
app.directive('myDirective', function(){
return{
transclude: true,
template: '<div class="something"> This is my directive content</div> <n...
CSS last-child selector: select last-element of specific class, not last child inside of parent?
...This is actually applying the class to the LAST instance only because it's now in reversed order.
Here is a working example for you:
<!doctype html>
<head><title>CSS Test</title>
<style type="text/css">
.some-class { margin: 0; padding: 0 20px; list-style-type: square...
What's “requestCode” used for on PendingIntent?
... No, It is not necessary for different intents. And I don't know why the documentation doesn't say anything about it, but I learnt this when setting repeating alarms and also when using the same intent.
– Minhaj Arfin
Feb 3 '14 at 12:46
...
How to apply multiple styles in WPF
...der the heading "How can I set multiple styles in WPF?"
That blog is dead now, so I'm reproducing the post here
WPF and Silverlight both offer the ability to derive a Style from another Style through the “BasedOn” property. This feature enables developers to organize their styles using a hi...