Struct errors

[survuvi]

What's wrong?

struct Person:
    fn who_is(self, name : StringRef, age : Int):
        self.name = name
        self.age = age

    fn hello(self):
        info : StringRef = "Hello, " + self.name + " of " + self.age + " years old." 
        return info

name : StringRef = "Mark"
age : Int = 23

person = Person(name, age)

print(person.hello())

_error: Expression [11]:9:13: 'Person' value has no attribute 'name'
self.name = name

error: Expression [11]:10:13: 'Person' value has no attribute 'age'
self.age = age

error: Expression [11]:13:9: use of unknown declaration 'info', 'fn' declarations require explicit variable declarations
info : StringRef = "Hello, " + self.name + " of " + self.age + " years old."

error: Expression [11]:13:14: statements must start at the beginning of a line
info : StringRef = "Hello, " + self.name + " of " + self.age + " years old."

error: Expression [11]:27:5: use of unknown declaration 'name'
name : StringRef = "Mark"

error: Expression [11]:27:10: statements must start at the beginning of a line
name : StringRef = "Mark"_

[crisadamo]

Hey,
A couple of things happening here. Please, see the notes on the code below:

from String import String

@value
@register_passable("trivial")
struct Person:
    # 1) Need to specify its properties
    var name: StringRef
    var age: Int
    
    # 2) the constructor is __init__ otherwise to use who_is, you need to  make it static and return a new Person.
    #    You can also add the @value decorator to the struct and skip the constructor
    #fn __init__(inout self, name: StringRef, age: Int):
    #    self.name = name
    #    self.age = age
    
    # 3) your version needed a few changes and also needed the register_passable decorator
    @staticmethod
    fn who_is(name: StringRef, age: Int) -> Self:
        return Self { name: name, age: age }

    # 4) StringLiteral can't `add` (__add__) StringRef, so we need to make it String to be able to join everything togehter.
    fn hello(self) -> String:
        let info: String = String() + "Hello, " + self.name + " of " + self.age + " years old." 
        return info

var name: StringRef = "Mark"
var age: Int = 23

var person = Person(name, age)
print(person.hello())

var name2: StringRef = "Fred"
var age2: Int = 30
var person2 = Person.who_is(name2, age2)
print(person2.hello())

[survuvi]

Thanks a lot now it works properly