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banananas

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•Created by banananas on 10/23/2024 in #questions

Creating files from code

Is there a way to create a file from code? I've tried using a python script:

def create_proj(path: str):
    with open(path + "/main.mojo", "x") as f:
        f.write("text goes here")

def create_proj(path: str):
    with open(path + "/main.mojo", "x") as f:
        f.write("text goes here")

then:

from python import *

fn create_proj(folder: String) raises:
    Python.add_to_path(".")
    var file = Python.import_module("createproj")
    file.create_proj(folder)

from python import *

fn create_proj(folder: String) raises:
    Python.add_to_path(".")
    var file = Python.import_module("createproj")
    file.create_proj(folder)

but I have been getting this error:

Unhandled exception caught during execution: module 'createproj' has no attribute 'create_proj'
/home/[USERNAME]/pyregl/.magic/envs/default/bin/mojo: error: execution exited with a non-zero result: 1

Unhandled exception caught during execution: module 'createproj' has no attribute 'create_proj'
/home/[USERNAME]/pyregl/.magic/envs/default/bin/mojo: error: execution exited with a non-zero result: 1

10 replies

MModular

•Created by banananas on 10/1/2024 in #questions

Using structs that inherit from a specific trait as a type?

If you have a trait and a struct that inherits from it, could you use that trait's children as a type in, for example, a list? E.g.:

trait MyTrait:
  fn __init__(inout self): ...

struct MyStruct(MyTrait):
  fn __init__(inout self): pass

fn main():
  let my_list = List[structs that inherit from MyTrait](MyStruct())

trait MyTrait:
  fn __init__(inout self): ...

struct MyStruct(MyTrait):
  fn __init__(inout self): pass

fn main():
  let my_list = List[structs that inherit from MyTrait](MyStruct())

15 replies

MModular

•Created by banananas on 9/28/2024 in #questions

Calling methods from list indexes

When I try running update from here:

alias CptList = List[ComponentList]

struct Entity:
    var components: CptList

    fn __init__(inout self, components: CptList):
        self.components = components
    
    fn update(inout self):
        for i in range(self.components.__len__()):
            self.components[i].update()
    
    fn addCpt(inout self, value: ComponentList):
        self.components.append(value)

alias CptList = List[ComponentList]

struct Entity:
    var components: CptList

    fn __init__(inout self, components: CptList):
        self.components = components
    
    fn update(inout self):
        for i in range(self.components.__len__()):
            self.components[i].update()
    
    fn addCpt(inout self, value: ComponentList):
        self.components.append(value)

It returns this error:

error: 'Variant[BaseComponent]' value has no attribute 'update'
            self.components[i].update()
            ~~~~~~~~~~~~~~~~~~^

error: 'Variant[BaseComponent]' value has no attribute 'update'
            self.components[i].update()
            ~~~~~~~~~~~~~~~~~~^

ComponentList is defined here:

alias ComponentList = Variant[
    BaseComponent,
]

alias ComponentList = Variant[
    BaseComponent,
]

BaseComponent is defined here:

@value
struct BaseComponent: # example
    fn __init__(inout self): print("hi!!!!!")

    fn update(inout self): print("update method")
    fn render(inout self): pass

@value
struct BaseComponent: # example
    fn __init__(inout self): print("hi!!!!!")

    fn update(inout self): print("update method")
    fn render(inout self): pass

18 replies

MModular

•Created by banananas on 9/25/2024 in #questions

Assigning additional traits to Variants

Is there a way to assign a trait to the Variant type? I'm specifically trying to use the __str__ method with List[Variant[types..]] specifically.

6 replies

MModular

•Created by banananas on 9/23/2024 in #questions

"Linking" structs together?

I'm not talking about inheritance from other structs, but is there a way to refer to other structs as well when referring to one of them? For example:

var thing = MyStruct()
var other_thing = MyOtherStruct()
var list_of_things = List[MyStruct](thing, other_thing) # this is valid code since MyOtherStruct is linked to MyStruct

var thing = MyStruct()
var other_thing = MyOtherStruct()
var list_of_things = List[MyStruct](thing, other_thing) # this is valid code since MyOtherStruct is linked to MyStruct

44 replies

MModular

•Created by banananas on 9/23/2024 in #questions

Is there a Struct type or something similar?

I'm trying to create a Set / List which can hold structs, but I'm not sure how to initialise this sort of type.

21 replies

MModular

•Created by banananas on 9/21/2024 in #questions

Using the .append() method on structs

I have the following code:

alias Component = fn() -> None

fn baseComponent(): pass

struct Entity():
    var components: List[Component]

    fn __init__(inout self):
        self.components = List[Component]()

    fn add(self, method: Component):
        self.components.append(method)

alias Component = fn() -> None

fn baseComponent(): pass

struct Entity():
    var components: List[Component]

    fn __init__(inout self):
        self.components = List[Component]()

    fn add(self, method: Component):
        self.components.append(method)

However, line 12 gives an error even though I think it should be valid. What is the proper syntax in this case?

10 replies

MModular

•Created by banananas on 9/15/2024 in #questions

Setting up SDL2 with Mojo on WSL

SDL is known for being notoriously hard to set up, and I only have experience with doing it in VS using NuGet (which is frankly a lot simpler). Does anybody know how to do it with Mojo and DLHandle?

5 replies

MModular

•Created by banananas on 9/13/2024 in #questions

Removing a mojo project

Is there a way to remove a mojo project using the magic tool?

magic remove

magic remove

in the directory doesn't seem to do anything. Thanks in advance.

6 replies

MModular

•Created by banananas on 9/13/2024 in #questions

Importing python modules

Whenever I try to import a python module using

import ctypes

import ctypes

(ctypes used as an example) VSCode gives me an error saying the module is inaccessible, and running mojo [file] says the same thing. I've checked and Python 3 is installed on both Windows 11 and WSL. (Using WSL) Thanks in advance.

4 replies

MModular

•Created by banananas on 9/13/2024 in #questions

Adding a .mojo or .🔥file to a magic project

I've created a project using

magic init hello-world --format mojo-project
cd hello-world && magic shell

magic init hello-world --format mojo-project
cd hello-world && magic shell

but how could I add a file to this project / view its directory? (Using WSL Ubuntu) Thanks in advance.

5 replies

MModular

•Created by banananas on 9/11/2024 in #questions

Installing Mojo on WSL?

I've got WSL downloaded and I have been trying to install Mojo, but all the tutorials that I find seem to be outdated, and running mojo commands isn't possible after installing Magic. Can someone tell me how to install Mojo with WSL?

7 replies

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