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开源MQTT网关：EMQX vs Mosquitto - 创客硬件开发 - 清泛IT社区，为创新赋能！
...户端认证权限与访问控制方面，Mosiquitto 提供了动态安全插件，通过灵活的方式处理用户名/密码身份验证和访问控制。Mosiquitto 支持匿名与用户名密码方式认证，并可以通过动态安全插件提供的自定义组群和角色的方式控制消息...
Differences between C++ string == and compare()?
...class charT, class traits, class Allocator>
bool operator==(const basic_string<charT,traits,Allocator>& lhs,
const basic_string<charT,traits,Allocator>& rhs) noexcept;
Returns: lhs.compare(rhs) == 0.
Seems like there isn't much of a difference!
...
Static constant string (class member)
... in a header file in your case)
class A {
private:
static const string RECTANGLE;
};
and then
// In one of the implementation files
const string A::RECTANGLE = "rectangle";
The syntax you were originally trying to use (initializer inside class definition) is only allowed with integra...
常用快速产品原型设计工具推荐 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...件工程师。
Pencil Project
Pencil Project最初只是firefox的小插件，曾经得过Firefox插件Grand Prize大奖第一名，后来发布了独立软件。这款手绘风格的开源原型设计工具可以用来绘制各种架构图和流程图。Pencil Project内置丰富模板，可...
Java String - See if a string contains only numbers and not letters
I have a string that I load throughout my application, and it changes from numbers to letters and such. I have a simple if statement to see if it contains letters or numbers but, something isn't quite working correctly. Here is a snippet.
...
How do you reverse a string in place in C or C++?
How do you reverse a string in C or C++ without requiring a separate buffer to hold the reversed string?
30 Answers
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C++ display stack trace on exception
...possibly corrupt>\n");
return;
}
// resolve addresses into strings containing "filename(function+address)",
// this array must be free()-ed
char** symbollist = backtrace_symbols(addrlist, addrlen);
// allocate string which will be filled with the demangled function name
...
Password masking console application
...ur else block that removes the previously entered character from your pass string variable.
Here's the relevant working code that should do what you require:
var pass = string.Empty;
ConsoleKey key;
do
{
var keyInfo = Console.ReadKey(intercept: true);
key = keyInfo.Key;
if (key == Conso...
Most efficient way to remove special characters from string
I want to remove all special characters from a string. Allowed characters are A-Z (uppercase or lowercase), numbers (0-9), underscore (_), or the dot sign (.).
...
Is there a simple way to convert C++ enum to string?
... I usually prefer the following method, so that it's possible to tweak the string a bit.
#define X(a, b) a,
#define X(a, b) b,
X(Red, "red")
X(Green, "green")
// etc.
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