大约有 42,000 项符合查询结果(耗时:0.0714秒) [XML]
Mac OSX Lion DNS lookup order [closed]
After upgrading to Mac OSX Lion I figured out that /etc/hosts is not looked up in first place for name resolution anymore. This leads to some side effects like:
...
Remove an entire column from a data.frame in R
Does anyone know how to remove an entire column from a data.frame in R? For example if I am given this data.frame:
6 Answer...
Difference between static memory allocation and dynamic memory allocation
I would like to know what is the difference between static memory allocation and dynamic memory allocation?
7 Answers
...
What is the difference D3 datum vs. data?
Can someone please explain the difference between datum() and data() in D3.js? I see both being used and I am not sure why you should choose one over the other?
...
How to split text without spaces into list of words?
Input: "tableapplechairtablecupboard..." many words
16 Answers
16
...
How to get the index of a maximum element in a numpy array along one axis
I have a 2 dimensional NumPy array. I know how to get the maximum values over axes:
4 Answers
...
What is the dependency inversion principle and why is it important?
What is the dependency inversion principle and why is it important?
16 Answers
16
...
In Clojure how can I convert a String to a number?
I have various strings, some like "45", some like "45px". How how I convert both of these to the number 45?
12 Answers
...
Creating a dictionary from a csv file?
I am trying to create a dictionary from a csv file. The first column of the csv file contains unique keys and the second column contains values. Each row of the csv file represents a unique key, value pair within the dictionary. I tried to use the csv.DictReader and csv.DictWriter classes, but I...
Are static class variables possible in Python?
Is it possible to have static class variables or methods in Python? What syntax is required to do this?
21 Answers
...
