:npos vs. string::max_size()if(__capacity>max_size())std::__throw_length_error(__N("basi...
fromstd_msgs.msg import String http://docs.ros.org/api/std_msgs/html/msg/String.html
Here is my c++ code: void print_console(std::string msg) { const char *p = msg.c_str(); HAL_UART_Transmit_DMA(CONSOLE, p, strlen(msg)); while (console_tx_flag == 0); // Wait until the uart transmit is complete console_tx_flag = 0; } Does anyone know how t...
#include<string_view>#include<iostream>usingnamespacestd::string_view_literals;voidfoo(std::string_view msg){ std::cout << msg.data() <<'\n';// undefined behavior if 'msg' is not null-// terminated// std::cout << msg << '\n'; is not undefined because operator<< uses// i...
MSG结构 2019-12-18 14:34 − MSG是Windows程序中的结构体,用于保存windows消息,定义: typedef struct tagMSG { HWND hwnd; //该消息所属的窗口句柄 UINT message; //指定消息的类型 WPARAM wParam; //用于指... Damon_Cai 0 1075 C++11:基于std::queue和std::mutex构建一个线程安全的队列 2019...
("basic_string::_M_create"));// The below implements an exponential growth policy, necessary to// meet amortized linear time requirements of the library: see// http://gcc.gnu.org/ml/libstdc++/2001-07/msg00085.html.if(__capacity>__old_capacity&&__capacity<2*__old_capacity){__capacity...
std::string msgHeader; msgHeader = "<"; msgHeader += a; msgHeader += "><"; msgHeader += b; msgHeader += "><"; msgHeader += c; msgHeader += ">"; Similarly it uses ostringstream as well and the function that uses this gets called almost on every message that my application ...
linear time requirements of the library: see// http://gcc.gnu.org/ml/libstdc++/2001-07/msg...
("basic_string::_M_create"));// The below implements an exponential growth policy, necessary to// meet amortized linear time requirements of the library: see// http://gcc.gnu.org/ml/libstdc++/2001-07/msg00085.html.if(__capacity>__old_capacity&&__capacity<2*__old_capacity){__capacity...
在需要引用的类或者文件中添加 #include "base64.h" 即可引用它的两个相关API函数,分别表示base64编码与解码: base64_encode base64_decode 代码演示 读入一张灰度图像...::string encoded = base64_encode(enc_msg, buf.size()); std::cout << "base64 encode content" << std::endl...; std::...