To execute a function, we need to call it. Calling a Function in Rust We use the name of the function and parentheses () to call a function. // call a function greet(); Let's complete the above example now. // define a function fn greet() { println!("Hello, World!"); } fn...
void*handle=dlopen("libexample.so",RTLD_LAZY);if(!handle){fprintf(stderr,"%s\n",dlerror());return;}void(*example_function)()=(void(*)())dlsym(handle,"example_function");if(!example_function){fprintf(stderr,"%s\n",dlerror());dlclose(handle);return;}example_function();dlclose(handle...
#[derive(Debug,Clone)]struct Point{x:i32,y:i32,}fnmain(){letp1=Point{x:10,y:20};letp2=p1.clone();println!("{:?}",p2);// 输出:Point { x: 10, y: 20 }} 在上述例子中,我们使用了#[derive(Debug, Clone)]宏为结构体Point实现了Debug和Clonetrait,从而可以通过println!宏打印结构体的...
fn function_test() { let fun2 = |i: i32| -> i32 { i + 1 }; // 加一的闭包 let fun3 = |i| { i + 1 }; // 这个rust可以自动类型推断 assert_eq!(2, fun1(1)); assert_eq!(2, fun2(1)); assert_eq!(2, fun3(1)); } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. ...
error: process didn't exit successfully: `target\debug\error_example.exe` (exit code: 101) 由于unwrap与expect会引发panic导致程序崩溃,所以错误处理中不建议这么去做,更千万别在库中写这两个方法。不过在个人写项目时还是有些用的,比如你可能这里出现错误的概率较小,等到出发了这个错误再进行更为细致的处理...
运行 AI代码解释 #[cfg_attr(doc,aquamarine::aquamarine)]/// A function showcasing aquamarine defaults/// With aquamarine it's possible to embed Mermaid diagrams into your Rust documentation using the code snippets/// ```mermaid/// graph LR/// s([Source]) --> a[[aquamarine]]/// r[[...
可以看到实际调用的是 FFI 中的 arithmetic_77d6_add 方法,我们记住这个奇怪名字。目前还缺图中的 Rust scaffolding 文件没找到,它实际藏在 /uniffi-rs/target/debug/build/uniffi-example-arithmetic 开头目录的 out 文件夹中,注意多次编译可能有多个相同前缀的文件夹。我们以 add 方法为例: ...
Rely on rbatis-codegen to create the source code of the corresponding structure from the html file at compile time (with debug_mode(Cargo.toml-rbatis = { features = ["debug_mode"]}) enabled, you can observe the code-generated function), and call the generated method directly at run time...
$ cargo build --example easing_functions $ target/debug/examples/easing_functions let mut play = Play::new( "Easing functions demo".to_string(), 1920, 1080, LayoutMode::UserDefine, ); let mut stage = Actor::new("stage".to_string(), 1920, 1080, None); stage.set_visible(true); ...
-L../rust/target/debug表示要增加一个库文件的搜索路径 -lrust表示要搜索一个叫做rust的库文件,按照*nix的规范,实际上就是查找一个叫做的文件 #include "ffi_demo.h"这一行就是一段标准的C语言代码,指示C语言编译器引用...