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How do I get the object if it exists, or None if it does not exist?
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From django docs
get() raises a DoesNotExist exception if an object is not found for the given parameters. This exception is also an attribute of the model class. The DoesNotExist exception inherits from django.core.exce...
Is there a way to instantiate a class by name in Java?
I was looking as the question : Instantiate a class from its string name which describes how to instantiate a class when having its name. Is there a way to do it in Java? I will have the package name and class name and I need to be able to create an object having that particular name.
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Why is f(i = -1, i = -1) undefined behavior?
... think undefined behavior means something random will happen, which is far from the case most of the time.
– Izkata
Feb 10 '14 at 17:38
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How to preview git-pull without doing fetch?
...rged later with git merge.
Man Page
Edit: Further Explination
Straight from the Git- SVN Crash Course link
Now, how do you get any new changes from a remote repository? You fetch them:
git fetch http://host.xz/path/to/repo.git/
At this point they are in your repository and you can e...
What is “git remote add …” and “git push origin master”?
...gms and concepts, it has the same zenlike clarity that I've come to expect from UNIX command line tools. You should consider taking some time off to read one of the many good git tutorials available online. The Pro Git book is a good place to start.
To answer your first question.
What is git remote...
In what order do static/instance initializer blocks in Java run?
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Good one . Straight from the creators
– human.js
Jun 20 '12 at 4:26
1
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SVN:externals equivalent in Git?
I have two SVN projects in use from another SVN repository using svn:externals .
3 Answers
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How to pretty-print a numpy.array without scientific notation and with given precision?
...689 0.754 0.624 0.901 0.049 0.582 0.557 0.348]
To prevent zeros from being stripped from the end of floats:
np.set_printoptions now has a formatter parameter which allows you to specify a format function for each type.
np.set_printoptions(formatter={'float': '{: 0.3f}'.format})
print(x)...
PHP ORMs: Doctrine vs. Propel
...JoinFoobar($c);
// Doctrine
$items = Doctrine_Query::create()
->from('Example e')
->leftJoin('e.Foobar')
->where('e.id = ?', 20)
->execute();
?>
(Doctrine's implementation is much more intuitive to me).
Also, I really prefer the way you manage relations...
In Clojure 1.3, How to read and write a file
... Demanding the next element of the lazy seq results into a line being read from the reader.
Note that from Clojure 1.7 onwards, you can also use transducers for reading text files.
Number 3: how to write to a new file.
(use 'clojure.java.io)
(with-open [wrtr (writer "/tmp/test.txt")]
(.write wr...