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How to pretty print XML from Java?
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Here's an answer to my own question. I combined the answers from the various results to write a class that pretty prints XML.
No guarantees on how it responds with invalid XML or large documents.
package ecb.sdw.pretty;
import org.apache.xml.serialize.OutputFormat;
import org.apach...
Breadth First Vs Depth First
... Container
While (there are nodes in Container)
N = Get the "next" node from Container
Store all the children of N in Container
Do some work on N
The difference between the two traversal orders lies in the choice of Container.
For depth first use a stack. (The recursive implementation ...
How to compute the similarity between two text documents?
...learn. In the latter package, computing cosine similarities is as easy as
from sklearn.feature_extraction.text import TfidfVectorizer
documents = [open(f) for f in text_files]
tfidf = TfidfVectorizer().fit_transform(documents)
# no need to normalize, since Vectorizer will return normalized tf-idf
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How do I obtain the frequencies of each value in an FFT?
...l input signal (imaginary parts all zero) the second half of the FFT (bins from N / 2 + 1 to N - 1) contain no useful additional information (they have complex conjugate symmetry with the first N / 2 - 1 bins). The last useful bin (for practical aplications) is at N / 2 - 1, which corresponds to 220...
When to use window.opener / window.parent / window.top
...ner refers to the window that called window.open( ... ) to open the window from which it's called
window.parent refers to the parent of a window in a <frame> or <iframe>
window.top refers to the top-most window from a window nested in one or more layers of <iframe> sub-windows
Th...
How to get the request parameters in Symfony 2?
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It is different from what PHP uses, but it actually makes more sense. $_GET data is data from the query string (no GET request needed at all) and $_POST data is data from the request body (does not have to be a POST request either, could be ...
async/await - when to return a Task vs void?
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I meant f instead of g in my comment. The exception from f is passed to the SynchronizationContext. g will raise UnobservedTaskException, but UTE no longer crashes the process if it's not handled. There are some situations where it's acceptable to have "asynchronous exceptions...
Define css class in django Forms
...can create a custom filter "addcss" in "my_app/templatetags/myfilters.py"
from django import template
register = template.Library()
@register.filter(name='addcss')
def addcss(value, arg):
css_classes = value.field.widget.attrs.get('class', '').split(' ')
if css_classes and arg not in css_...
socket.io and session?
I'm using express framework. I want to reach session data from socket.io. I tried express dynamicHelpers with client.listener.server.dynamicViewHelpers data, but i can't get session data. Is there a simple way to do this? Please see the code
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What does %s mean in a python format string?
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It is a string formatting syntax (which it borrows from C).
Please see "PyFormat":
Python supports formatting values into
strings. Although this can include
very complicated expressions, the most
basic usage is to insert values into a
string with the %s placehold...