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Could not load file or assembly 'xxx' or one of its dependencies. An attempt was made to load a prog
...ecked out a revision from Subversion to a new folder. Opened the solution and I get this when run:
9 Answers
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Fastest way to get the first object from a queryset in django?
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Use the convenience methods .first() and .last():
MyModel.objects.filter(blah=blah).first()
They both swallow the resulting exception and return None if the queryset returns no objects.
These were added in Django 1.6, which was released in Nov 2013.
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What does new self(); mean in PHP?
...ends MyParentClass {
}
$a = MyChildClass::getInstance();
var_dump($a);
And you'd get this kind of output :
object(MyParentClass)#1 (0) { }
Which means self means MyParentClass -- i.e. here too, the class in which it is written.
With PHP < 5.3, that "the class in which it is written" ...
Java 8 NullPointerException in Collectors.toMap
...ws a NullPointerException if one of the values is 'null'. I don't understand this behaviour, maps can contain null pointers as value without any problems. Is there a good reason why values cannot be null for Collectors.toMap ?
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Change the name of the :id parameter in Routing resources for Rails
I looked around on how to change the dynamic params slot and found this post that does the exact thing.
The post is https://thoughtbot.com/blog/rails-patch-change-the-name-of-the-id-parameter-in
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Replace words in the body text
...at encoding is your document in? Are you sure that the character is an ü, and not &#252; for example..?
– Dexter
Apr 5 '11 at 21:44
2
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Send email using java
...very well with Google SMTP server. You need to supply your Google username and password.
import com.sun.mail.smtp.SMTPTransport;
import java.security.Security;
import java.util.Date;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Sess...
How to draw a custom UIView that is just a circle - iPhone app
...ally just a ball (a 2D circle)? Would I just override the drawRect method? And can someone show me the code for drawing a blue circle?
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How to check a not-defined variable in JavaScript
...nly be done with try/catch, since typeof will treat an undeclared variable and a variable declared with the value of undefined as equivalent.
But, to check if a variable is declared and is not undefined:
if (yourvar !== undefined) // Any scope
Previously, it was necessary to use the typeof opera...
How to Animate Addition or Removal of Android ListView Rows
In iOS, there is a very easy and powerful facility to animate the addition and removal of UITableView rows, here's a clip from a youtube video showing the default animation. Note how the surrounding rows collapse onto the deleted row. This animation helps users keep track of what changed in a li...