大约有 25,000 项符合查询结果（耗时：0.0312秒） [XML]
C语言面试那些事儿──一道指针与数组问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
C语言面试那些事儿──一道指针与数组问题首先看如下代码：int main(int argc, char** argv){ int a[5] = {1,2,3,4,5}; int* ptr = (int*)(&a + 1); ...首先看如下代码：
int main(int argc, char** argv)
{
int a[5] = {1,2,3,4,5};
int* ptr = (int*)(&a + 1);
...
C/C++获取Windows的CPU、内存、硬盘使用率 - C/C++ - 清泛网 - 专注C/C++及内核技术
C/C++获取Windows的CPU、内存、硬盘使用率1.获取Windows系统内存使用率 Win 内存 使用率 DWORD getWin_MemUsage(){MEMORYSTATUS ms;::GlobalMemoryStatus(&ms);return ms.d...1.获取Windows系统内存使用率
//Win 内存 使用率
DWORD getWin_MemUsage()
{
MEMORYSTATUS m...
c/c++取结构体指定成员的偏移，及原理解析 - C/C++ - 清泛网 - 专注C/C++及内核技术
c/c++取结构体指定成员的偏移，及原理解析c_offset_of可以使用std标准函数 offsetof()，在stddef h头文件中，实现原理如下（模拟系统的实现）： define MY_STRUCT_OFFSET(s, m) ((size_t)(& ((s*)0)->m ))原理如下：1、0即空指 可以使用std标准函数 of...
std::vector performance regression when enabling C++11
I have found an interesting performance regression in a small C++ snippet, when I enable C++11:
1 Answer
...
How to set breakpoints on future shared libraries with a command flag
I'm trying to automate a gdb session using the --command flag. I'm trying to set a breakpoint on a function in a shared library (the Unix equivalent of a DLL) . My cmds.gdb looks like this:
...
Transform DateTime into simple Date in Ruby on Rails
I have a datetime column in db that I want to transform into a simple date when I show it to users.
6 Answers
...
POST data in JSON format
I have some data that I need to convert to JSON format and then POST it with a JavaScript function.
4 Answers
...
Tar archiving that takes input from a list of files
I have a file that contain list of files I want to archive with tar.
Let's call it mylist.txt
6 Answers
...
PHP: merge two arrays while keeping keys instead of reindexing?
How can I merge two arrays (one with string => value pairs and another with int => value pairs) while keeping the string/int keys? None of them will ever overlap (because one has only strings and the other has only integers).
...
Inject errors into already validated form?
...m validates the user input values I pass them to a separate (external) process for further processing. This external process can potentially find further errors in the values.
...