大约有 42,000 项符合查询结果(耗时:0.0540秒) [XML]

https://stackoverflow.com/ques... 

Get type of all variables

In R, I'd like to retrieve a list of global variables at the end of my script and iterate over them. Here is my code 6 Answ...
https://stackoverflow.com/ques... 

What is the reason for performing a double fork when creating a daemon?

I'm trying to create a daemon in python. I've found the following question , which has some good resources in it which I am currently following, but I'm curious as to why a double fork is necessary. I've scratched around google and found plenty of resources declaring that one is necessary, but not ...
https://stackoverflow.com/ques... 

What is the difference between a deep copy and a shallow copy?

What is the difference between a deep copy and a shallow copy? 31 Answers 31 ...
https://stackoverflow.com/ques... 

How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?

I understand the diamond problem, and above piece of code does not have that problem. 5 Answers ...
https://stackoverflow.com/ques... 

Should each and every table have a primary key?

I'm creating a database table and I don't have a logical primary key assigned to it. So, I'm thinking about leaving it without a primary key, but I'm feeling a bit guilty about it. Should I? ...
https://stackoverflow.com/ques... 

Regular expression to match DNS hostname or IP Address?

Does anyone have a regular expression handy that will match any legal DNS hostname or IP address? 21 Answers ...
https://stackoverflow.com/ques... 

Split a string at uppercase letters

What is the pythonic way to split a string before the occurrences of a given set of characters? 16 Answers ...
https://stackoverflow.com/ques... 

python list by value not by reference [duplicate]

Let's take an example 11 Answers 11 ...
https://stackoverflow.com/ques... 

What is the difference between a process and a thread?

What is the technical difference between a process and a thread? 35 Answers 35 ...
https://stackoverflow.com/ques... 

Why does the use of 'new' cause memory leaks?

I learned C# first, and now I'm starting with C++. As I understand, operator new in C++ is not similar to the one in C#. ...