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How do you represent a graph in Haskell?
...rted to additional indirection, as you're suggesting; often by using a map from ids to the actual elements, and having elements contain references to the ids instead of to other elements. The main thing I didn't like about doing that (aside from the obvious inefficiency) is that it felt more fragile...
Sass or Compass without ruby?
... Sass is written in Ruby, so you’ll need Ruby installed as well.
Taken from sass's site
Compass (requires Ruby, as it's based on SASS)
Compass is an open-source CSS authoring framework which uses the Sass stylesheet language to make writing stylesheets powerful and easy.
Taken from compa...
How did Microsoft create assemblies that have circular references?
...
Yes, that's indeed the way it is done (from personal experience).
– Pavel Minaev
Oct 6 '09 at 17:12
1
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Character reading from file in Python
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Ref: http://docs.python.org/howto/unicode
Reading Unicode from a file is therefore simple:
import codecs
with codecs.open('unicode.rst', encoding='utf-8') as f:
for line in f:
print repr(line)
It's also possible to open files in update mode, allowing both reading and ...
How does push notification technology work on Android?
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From what I've heard during an Android developers conference in Israel:
There is simply a TCP socket waiting in accept mode on a cloud Google server. The TCP connection had been initiated by the Google Play application. That...
What is WEB-INF used for in a Java EE web application?
...ad CSS or Javascript for instance).
Your JSP files can be anywhere though from a technical perspective. For instance in Spring you can configure them to be in WEB-INF explicitly:
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/WE...
How to capture stdout output from a Python function call?
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Try this context manager:
from io import StringIO
import sys
class Capturing(list):
def __enter__(self):
self._stdout = sys.stdout
sys.stdout = self._stringio = StringIO()
return self
def __exit__(self, *args):
...
Unable to import a module that is definitely installed
...s will be over-restricted. If you simply su first and then do the install from a full root shell, the resulting install is usable (at least it is for me). This was for pip, but may apply to apt-get as well. If others confirm this cause, may want to amend the answer accordingly?
...
Convert JS Object to form data
...t, you can easily create a FormData object and append the names and values from that object to formData.
You haven't posted any code, so it's a general example;
var form_data = new FormData();
for ( var key in item ) {
form_data.append(key, item[key]);
}
$.ajax({
url : 'http://ex...
Remove characters except digits from string using Python?
How can I remove all characters except numbers from string?
15 Answers
15
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