大约有 41,731 项符合查询结果（耗时：0.0512秒） [XML]
Swapping two variable value without using third variable
One of the very tricky questions asked in an interview.
27 Answers
27
...
How to initialise memory with new operator in C++?
I'm just beginning to get into C++ and I want to pick up some good habits. If I have just allocated an array of type int with the new operator, how can I initialise them all to 0 without looping through them all myself? Should I just use memset ? Is there a “C++” way to do it?
...
How to find and return a duplicate value in array
arr is array of strings:
20 Answers
20
...
How to read the output from git diff?
The man page for git-diff is rather long, and explains many cases which don't seem to be necessary for a beginner. For example:
...
python pandas: Remove duplicates by columns A, keeping the row with the highest value in column B
I have a dataframe with repeat values in column A. I want to drop duplicates, keeping the row with the highest value in column B.
...
Is there a standard sign function (signum, sgn) in C/C++?
I want a function that returns -1 for negative numbers and +1 for positive numbers.
http://en.wikipedia.org/wiki/Sign_function
It's easy enough to write my own, but it seems like something that ought to be in a standard library somewhere.
...
What is the difference between require_relative and require in Ruby?
What is the difference between require_relative and require in Ruby?
7 Answers
7
...
Lua string to int
How can I convert a string to an integer in Lua?
12 Answers
12
...
How to avoid using Select in Excel VBA
I've heard much about the understandable abhorrence of using .Select in Excel VBA, but am unsure of how to avoid using it. I am finding that my code would be more re-usable if I were able to use variables instead of Select functions. However, I am not sure how to refer to things (like the Activ...
What should a Multipart HTTP request with multiple files look like? [duplicate]
I'm working on an iPhone app that makes a multipart HTTP request with multiple image files.
2 Answers
...