Cairo 101 入门

// 使用结构体声明存储变量
#[storage]
struct Storage{
    var_felt: felt252,
    var_bool: bool,
    var_uint: u8,
}

// 创建自定义结构体
#[derive(Copy, Drop, Serde)] // 暂时忽略此行
struct Student {
    name: felt252,
    score: u128,
}

// 创建结构体
let student = Student{ name: '0xAA', score: 100_u128 };
// 或者
// let student: Student = Student{ name: '0xAA', score: 100_u128 };

// 从结构体中获取值
let student_name = student.name;
let student_score = student.score;

// 创建 Student 结构体的数组
let mut student_arr = ArrayTrait::<Student>::new();
student_arr.append(student);

// 创建并返回一个 Student 结构体
#[external(v0)]
fn create_struct(self: @ContractState) -> Student{
    // 创建结构体
    let student = Student{ name: '0xAA', score: 100_u128 };
    return student;
}