2015年3月27日
Integer to Boolean strange syntax
摘要： Question:I'm less than a year into C++ development (focused on other languages prior to this) and I'm looking at a guy's code who's be... 阅读全文
posted @ 2015-03-27 02:12 vigorpush 阅读(101) 评论(0) 推荐(0) 编辑
Placement of class definition and prototype
摘要： When I create a function, I can put the code for it after main if I put the prototype above main. For example,int myFunction(int a){re... 阅读全文
posted @ 2015-03-27 02:10 vigorpush 阅读(111) 评论(0) 推荐(0) 编辑
2015年3月26日
What are the differences between a pointer variable and a reference variable in C++?
摘要： Question：I know references are syntactic sugar, so code is easier to read and write.But what are the differences?Summary from answers ... 阅读全文
posted @ 2015-03-26 16:28 vigorpush 阅读(127) 评论(0) 推荐(0) 编辑
What is The Rule of Three?
摘要： Question：What does copying an object mean? What are the copy constructor and the copy assignment operator? When do I need to declare t... 阅读全文
posted @ 2015-03-26 16:25 vigorpush 阅读(157) 评论(0) 推荐(0) 编辑
What are the differences between struct and class in C++?
摘要： Question：This question was already asked in the context of C#/.Net.Now I'd like to learn the differences between a struct and a class ... 阅读全文
posted @ 2015-03-26 16:22 vigorpush 阅读(211) 评论(0) 推荐(0) 编辑
When should you use a class vs a struct in C++?
摘要： Question：In what scenarios is it better to use a struct vs a class in C++?Answer：The only difference between a class and a struct in C... 阅读全文
posted @ 2015-03-26 16:18 vigorpush 阅读(129) 评论(0) 推荐(0) 编辑
How do I close a single buffer (out of many) in Vim?
摘要： I open several files in Vim by, for example, runningvim a/*.phpwhich opens 23 files.I then make my edit and run the following twice:qw... 阅读全文
posted @ 2015-03-26 15:03 vigorpush 阅读(141) 评论(0) 推荐(0) 编辑
Why is one loop so much slower than two loops?
摘要： Question:Suppose a1, b1, c1, and d1 point to heap memory and my numerical code has the following core loop.const int n=100000for(int j... 阅读全文
posted @ 2015-03-26 08:09 vigorpush 阅读(149) 评论(0) 推荐(0) 编辑
Why in the code “456”+1, output is “56”
摘要： Question:#include int main(){ std::cout << "25"+1; return 0;}I am getting "5" as output.when I use "5"+1,output is blank;"456"+1... 阅读全文
posted @ 2015-03-26 08:05 vigorpush 阅读(116) 评论(0) 推荐(0) 编辑
I want to learn Android Development, where do I start?
摘要： Question:But I completely have no idea what I wanted to make. I just would like to study android.Would someone recommend me a simple p... 阅读全文
posted @ 2015-03-26 02:23 vigorpush 阅读(133) 评论(0) 推荐(0) 编辑