大约有 18,000 项符合查询结果（耗时：0.0367秒） [XML]
C++, What does the colon after a constructor mean? [duplicate]
I have some C++ code here:
6 Answers
6
...
Write to file, but overwrite it if it exists
How do I make it so it creates the file if it doesn't exist, but overwrites it if it already exists. Right now this script just appends.
...
split string only on first instance - java
I want to split a string by '=' charecter. But I want it to split on first instance only. How can I do that ? Here is a JavaScript example for '_' char but it doesn't work for me
split string only on first instance of specified character
...
Longest line in a file
I'm looking for a simple way to find the length of the longest line in a file. Ideally, it would be a simple bash shell command instead of a script.
...
How to combine multiple conditions to subset a data-frame using “OR”?
I have a data.frame in R. I want to try two different conditions on two different columns, but I want these conditions to be inclusive. Therefore, I would like to use "OR" to combine the conditions. I have used the following syntax before with lot of success when I wanted to use the "AND" conditio...
C++ equivalent of java's instanceof
What is the preferred method to achieve the C++ equivalent of java's instanceof ?
6 Answers
...
Why is the .bss segment required?
What I know is that global and static variables are stored in the .data segment, and uninitialized data are in the .bss segment. What I don't understand is why do we have dedicated segment for uninitialized variables? If an uninitialised variable has a value assigned at run time, does the varia...
Boost Statechart vs. Meta State Machine
...tate machines: Statechart and Meta State Machine (MSM). The taglines give very similar descriptions:
5 Answers
...
How do I join two lines in vi?
I have two lines in a text file like below:
9 Answers
9
...
NoSQL Use Case Scenarios or WHEN to use NoSQL [closed]
With all the hype it seems really hard to find reliable information on when to use this. So I pose the following questions, and I'm sorry if these are really dumb questions in advance:
...