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How do you create nested dict in Python?
...he following:
d = {} # can use defaultdict(dict) instead
for row in file_map:
# derive row key from something
# when using defaultdict, we can skip the next step creating a dictionary on row_key
d[row_key] = {}
for idx, col in enumerate(row):
d[row_key][idx] = col
Ac...
Difference between $.ajax() and $.get() and $.load()
...imes very useful. You have to deal with the returned data yourself with a callback.
$.get() is just a shorthand for $.ajax() but abstracts some of the configurations away, setting reasonable default values for what it hides from you. Returns the data to a callback. It only allows GET-requests so is...
How do I create a simple 'Hello World' module in Magento?
...perienced programmer or don't have access to an experienced programmer (ideally in PHP and Java), pick another cart. Magento is well engineered, but it was engineered to be a shopping cart solution that other programmers can build modules on top of. It was not engineered to be easily understood by p...
How do I represent a hextile/hex grid in memory?
...-> axial conversion for rounding which confuses me also as it doesn't really explain why you need to when axial can just technically be cube all the time if you just ignore the s variable, why do both types exist at all.
– WDUK
Aug 20 at 23:54
...
Can jQuery provide the tag name?
...Name.toLowerCase(), as most DOM representations of HTML documents automatically uppercase the nodeName.
– NickFitz
Oct 7 '09 at 15:27
...
What happens to an open file handle on Linux if the pointed file gets moved or deleted
...n still be used (This is not what some people expect). The file will not really be deleted until the last handle is closed.
If the file is replaced by a new file, it depends exactly how. If the file's contents are overwritten, the file handle will still be valid and access the new content. If the e...
machine learning libraries in C# [closed]
...asses:
public class TrainingSet
{
private readonly List<string> _attributes = new List<string>();
private readonly List<List<object>> _examples = new List<List<object>>();
public TrainingSet(params string[] attributes)
{
_attributes.AddRang...
Match whitespace but not newlines
...ghteen horizontal ones which match \h. \s matches twenty-three characters
All whitespace characters are either vertical or horizontal with no overlap, but they are not proper subsets because \h also matches U+00A0 NO-BREAK SPACE, and \v also matches U+0085 NEXT LINE, neither of which are matched by...
How can I use map and receive an index as well in Scala?
...t as you would do in Java. But it's not functional style. Think if you actually need it.
– Cristian Vrabie
Mar 12 '12 at 10:52
...
The name 'model' does not exist in current context in MVC3
...ter my first attempt to convert to Razor failed), and this was the problem all along. Thanks!
– Brian Donahue
Feb 15 '12 at 16:32
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