大约有 5,685 项符合查询结果（耗时：0.0321秒） [XML]
Why is the use of tuples in C++ not more common?
...all very ugly and hacky looking when compared to something like Haskell or Python. When C++0x gets here and we get the 'auto' keyword tuples will begin to look a lot more attractive.
The usefulness of tuples is inversely proportional to the number of keystrokes required to declare, pack, and unpack...
Can someone give an example of cosine similarity, in a very simple, graphical way?
...
This Python code is my quick and dirty attempt to implement the algorithm:
import math
from collections import Counter
def build_vector(iterable1, iterable2):
counter1 = Counter(iterable1)
counter2 = Counter(iterable2)
...
datetime dtypes in pandas read_csv
...
Not the answer you're looking for? Browse other questions tagged python csv datetime pandas dataframe or ask your own question.
Django REST framework: non-model serializer
...the API consumer. You can also enable YAML by just installing the required python module. Django-rest-framework will output any basic object like dict, list and tuple without any extra work on your part.
So basically you only have to create the function or class that takes in arguments, does all of...
Android - how do I investigate an ANR?
...lly, and I apologize for shamelessly plugging my own code, you can use the python log analyzer I wrote at https://github.com/HarshEvilGeek/Android-Log-Analyzer This will go through your log files, open ANR files, find deadlocks, find waiting main threads, find uncaught exceptions in your agent logs ...
What is the difference between an interface and abstract class?
...while in PHP, interfaces are abstract classes with no method declared.
In Python, abstract classes are more a programming trick you can get from the ABC module and is actually using metaclasses, and therefore classes. And interfaces are more related to duck typing in this language and it's a mix be...
Why is Lisp used for AI? [closed]
... days, prototypes usually are written in a younger dynamic language (Perl, Python, Ruby, etc) and implementations of successful research is usually in C or C++ (sometimes Java).
If you're curious about the 70's...well, I wasn't there. But I think Lisp was successful in AI research for three reasons...
How can I read and parse CSV files in C++?
...file with ten fields per line takes around 8 seconds on my 2 GHz Xeon. The Python Standard Library csv module parses the same file in about 0.3 seconds.
– Rob Smallshire
Jun 27 '12 at 7:59
...
Good ways to manage a changelog using git?
... Mustache, Mako templating, and has a default legacy engine written in raw python ; all current 3 engines have examples of how to use them and can output changelog's as the one displayed on the PyPI page of gitchangelog.
I'm sure you know that there are plenty of other git log to changelog tools ou...
What is the recommended way to delete a large number of items from DynamoDB?
...ise this is old, and the OP didn't mention a specific language SDK, but in Python there is a high level batch_writer() as part of the boto3.resource.Table API that will "automatically handle buffering and sending items in batches. In addition, the batch writer will also automatically handle any unpr...